The biological significance of equilibrium is a saddle point i.e. Bifurcation theory's biological applications give us a foundation for understanding the dynamics of biological networks that thought of dynamical systems.
The trapeziometacarpal joint at the base of your thumb is the best illustration of a saddle joint. It joins your thumb's trapezium and metacarpal bone. Your thumb may stretch significantly to help you grasp huge objects because of the joint's flexion-extension and abduction-adduction properties. Additionally, it has the ability to slid inward, touching each of your other fingers closely. Osteoarthritis in this region may also impact your thumb and inner wrist, resulting in discomfort, stiffness, and weakness. A form of synovial joint called a saddle joint has opposing surfaces that are reciprocally concave and convex (sellar joint, articulation by reciprocal reception). It can be discovered in the thumb, thorax, heel, and middle ear. Saddle joints are able to move in all of these directions, just as the condyloid joint: flexion, extension, adduction, abduction, and circumduction. Axial rotation is not permitted, though. When saddle joints can move in both the sagittal and frontal planes, they are said to be biaxial.
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which answer correctly compares the primary transcript in a prokaryotic cell with the functional mrna?which answer correctly compares the primary transcript in a prokaryotic cell with the functional mrna?the primary transcript is the same size as the mrnathe primary transcript and the mrna both contain intronsthe primary transcript is larger than the mrnathe primary transcript is smaller than the mrna
What is the relationship between the functional mRNA and the primary transcript found in the nucleus of a prokaryotic cell? The size of the mRNA and the main transcript is the same.
The DNA coding sequence contains a specific triplet of nucleotides known as AAA. Due to the close proximity of the ribosomes to the nascent mRNA molecules, translation of a transcript in prokaryotes starts before the transcript is finished. However, in eukaryotes, transcripts undergo nucleoplasmic modifications before being exported to the cytoplasm for translation. An average primary transcript made by RNA polymerase II is 7,000 nucleotides long, though some can reach 20,000 nucleotides in length, according to studies of these transcripts.
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Tatuo Aida investigated the genetic basis of color variation in the Medaka (Aplocheilus latipes), a small fish found in Japan (Aida, 1921). Aida found that genes at two loci (B, b and R, r) determine the color of the fish. Specifically, fish with a dominant allele at both loci (B_R_) are brown, fish with a dominant allele at the B locus only (B_ rr) are blue, fish with a dominant allele at the R locus only (bb R_) are red, and fish with recessive alleles at both loci (bb rr) are white. What results would you expect if you crossed a homozygous red fish with a homozygous blue fish and then backcrossed the Fi with a homozygous red parental fish? The Fı generation is BB RR OB_R Bb Rr The F2 generation is Brown Red genotypes Bb Rr bb Rr Answer Bank Bb RR bb RR BB RR Bb RT bb Rr BB Rr Incorrect
Backcross offspring received recessive alleles b and r. The alleles received from the other parent thus determine their phenotype:
Brown fish are referred to as Bb Rr, blue fish as Bb rr, red fish as bb Rr, and white fish as bb rr.
b. We anticipate a 1:1:1:1 phenotype ratio.
We cannot reject the hypothesis because df = 4 - 1 = 3; 0.9 p 0.975.
c. A homozygous red fish is bb RR crossed to b and r. All descendants would be bb Rr, or red fish.
d. Red fish bb RR homozygous + blue fish BB rr homozygous
F1 will be all brown because Bb Rr was backcrossed to Bb RR (homozygous red parent)
Backcross progeny will be distributed equally. Bb Rr (brown); Bb Rr (brown).
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during an excitatory postsynaptic potential (epsp), the postsynaptic membrane would most likely become more permeable to which of the following:
The membrane becomes more permeable to Na+ during an excitatory postsynaptic potential (EPSP). The correct option to this question is A.
When sodium channels open in response to a stimulus, an excitatory postsynaptic potential (EPSP) takes place. As a result of the electrochemical gradient, sodium floods the cell. The membrane potential of the cell increases or depolarizes, when sodium introduces its positive charge into the cell.
Synaptic inputs called excitatory postsynaptic potentials (EPSPs) depolarize the postsynaptic cell, bringing the membrane potential closer to the action potential threshold.
This makes the EPSP more likely to result in an action potential from the postsynaptic neuron, designating this synapse as excitatory.
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Complete question:
During an excitatory postsynaptic potential (EPSP), the postsynaptic membrane would most likely become more permeable to which of the following:
a) Na+.
b) K+.
c) Norepinephrine
d) Cl-.
e) Acetylcholine
Select all that apply
Secreted antibody molecules ______.
circulate freely in the lymph
circulate freely in the tissue fluids
are trapped in tissues
circulate freely in the blood
Answer: circulate freely in the lymph
circulate freely in the tissue fluids
circulate freely in the blood
Secreted antibody molecules:
Circulate freely in the lymph Circulate freely in the tissue fluids Circulate freely in the blood. About antibodyAntibody is a glycoprotein with a specific structure secreted from absorbent B-lymphocytes which have been activated to become plasma cells,as a response to certain antigen and reactive to that antigen.
The human immunity system is determined by the ability of the body to produce antibodies against antigens. Antibodies can be found in the blood or glands of the body of other vertebrates, and are used by the immune system to identify and neutralize foreign bodies such as bacteria and viruses. Antibody molecules circulate in the blood vessels and enter the body's tissues by going through a round of inflammation. They are made of little basic structures called chains. Each antibody has two heavy chains and two light chains.
There are several different types of antibody heavy chains, and several different types of antibodies, which are assigned to different classes (en:isotypes) based on each heavy chain. Five different isotypes of antibodies are known to exist in the mammalian body and play different roles and help direct the appropriate immune response for each different type of foreign body that enters the body,namely: IgG, IgM, IgA, IgD and IgE, which have a difference in area C.
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What is pollution?
Explain how pollution can negatively affect an ecosystem.
Use an example from your own knowledge to support your answer.
Now help me i only have 5 mins left to have this done pleeaeee
The human eye is most sensitive to green light of wavelength 505 nm. Experiments have found that when people are kept in a dark room until their eyes adapt to the darkness, a single photon of green light will trigger receptor cells in the rods of the retina.
Due to the wavelength of green light activating two of the three different types of color receptors in the eye, green light is the color that human eyes are most sensitive to. With a wavelength of 555 nanometers, green light falls in the middle between long wave and medium wave light.
What effects does green have on your eyes?You staying calm
Some scientists and academics also think that because our eyes are most adept at detecting the wavelengths associated with the color green, the shade may have a calming effect on us. Our nervous system needs less effort to perceive the colors, so
Green is more sensitive, why?Due to the stimulation of two of the three types of cones, L and M, green light (555 nm) has the highest sensitivity to the eye.
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Which statement is true about the DNA molecule during transcription?
Answer: D. Only a small area is open. Please pick brainliest.
Explanation:
in 1977, rafael guzamn, a mexican biologist, discovered a previously unknown wild relative of corn that is resistant to many of the viral disease that infect domestic corn. agriculturalists belief that crossbreeding the wild corn with domestic corn would improve current corn crops. in this case, which type of biodiversity is important?
in this case, genes type of biodiversity is important.
The research of genes, genetic mutation, and hereditary factors in organisms is known as genetics. It is an important branch of biology because heredity is essential to the evolution of organisms. Gregor Mendel, a Moorish Roman catholic friar operating in Brno in the mid-1800s, was the first person to perform science studies on genetics. Genetics has its roots in the development of evolutionary theories. Following Charles Darwin and Wallace's research, the origin of species and how species variability was developed in 1858.Biodiversity is the variety of daily existence which can be discovered in a particular region, such as living creatures, plants, microorganisms, and even microorganisms such as bacteria. Almost all of these species and microbes work collaboratively in ecologies to keep the balance and sustain life, similar to an intricate web.
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what is the original source of energy in the food you eat?(1 point) responses plants plants sugar sugar photosynthesis photosynthesis sun
Through photosynthesis, certain organisms convert solar energy (sunlight) into chemical energy, which is then used to build carbohydrate molecules.
The energy used to hold these molecules together is released when an organism breaks down food. Cells then use this energy to do work, such as cellular respiration. The energy content of all food molecules can be traced back to the Sun. It is the process of photosynthesis that locks energy from the Sun into simple carbohydrates like glucose. In photosynthesis, solar energy is harvested as chemical energy in a process that converts water and carbon dioxide into glucose. Oxygen is released as a byproduct. Plants use a process called photosynthesis to make food. During photosynthesis, plants trap light energy with their leaves. Plants use the sun's energy to convert water and carbon dioxide into a sugar called glucose. Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
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Which best describes inserting a table using the Table Gallery?
A The user can click on Insert Table.
B There are many options on how to include a table.
C The user can make a quick selection of the number of rows and columns present.
D The user can click to use an Excel spreadsheet.
write a sentence that compares the reactants and products of photosynthesis with the reactants and products of cellular respiration
Answer:
The reactants of photosynthesis are carbon dioxide and water, which are the products of cellular respiration.
The outermost membrane of a euglenid chloroplast is thought to have been derived from what part of an original host cell that engulfed a green alga?.
The digestive vacuole (DV) membrane of the host serves as the basis for the perialgal vacuole (PV) membrane that protects the symbiotic algae.
What served as the chloroplasts' point of origin?Chloroplasts were initially created in eukaryotes through the endosymbiosis of a cyanobacterium; they subsequently spread through host diversification and the eventual engulfment of eukaryotic algae by previously nonphotosynthetic eukaryotes.
Of these protists, which is thought to have originated after a secondary endosymbiosis?The hypothesis that chlorarachniophytes originated via secondary endosymbiosis is supported by a number of lines of evidence. Chlorarachniophytes are photosynthesis-capable because of the chloroplasts that remain inside the endosymbionts of green algae. A remnant nucleus is also present in the green algal endosymbiont.
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If dermal papillae were missing, then __________.
a. friction ridges would be absent
b. excess water loss would occur
c. keratin could not be produced in the skin
d. sebum secretion would be absent
PLSSS HELP IF YOU TURLY KNOW THISS
Answer: B. increase
Explanation:
Adaptation is what species do to survive or increase their survival rate.
if a bacterium regenerates from an endospore that did not possess any of the plasmids that were contained in its original parent cell, the regenerated bacterium will probably also . a. lack a cell wall b. lack a chromosome c. lack antibiotic-resistant genes d. lack water in its cytoplasm
The bacterium regenerates from an endospore that lacks the plasmid contained in the original parent cell, the regenerating bacterium will probably also a.) lack a cell wall.
What is an endospore?Endospores are bacterial cells that have undergone differentiation to become more resistant to heat, harmful chemicals, radiation, and other conditions that can kill ordinary bacterial cells.
The function of the endospore in bacterial cells is as a survival structure (dormant structure). This thick-walled structure allows bacteria to survive unfavorable conditions.
For example, when environmental conditions change to be inappropriate and extreme (drought, very low or very high temperatures) or lack of nutrients.
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sort each process into the appropriate bin to indicate the stage of mitosis in which it occurs. if a process occurs in more than one stage, sort it to the stage when it first occurs. prophase prometaphase metaphase anaphase telophase
Sister chromatids of a duplicated chromosome are joined by cohesions. Assembling tubulins to form spindle microtubules
Prophase. Prophase, the first stage of mitosis, sees the recruitment of condensin and the start of the condensation process that lasts until metaphase. The chromosomes decrease and thicken during prophase. Chromatids split across the centromere and migrate to opposing poles during anaphase. Telophase: Following the reorganization of nuclear envelopes surrounding each cluster of chromosomes, two nuclei are created by cohesion. Prophase, Metaphase, Anaphase, & Telophase are the four fundamental stages of mitosis by cohesions. Cytokinesis, the process of splitting the contents of the cell to create two new cells, begins in either anaphase or telophase and occurs in this exact sequential manner.
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Which choice is utilized by eukaryotes to control their gene expression that is not used in bacteria?.
Eukaryotes, unlike bacteria, use control of chromatin remodeling and RNA splicing to regulate their gene expression.
How do eukaryotes regulate the expression of their genes?Both transcriptional activators and repressors control how genes are expressed in eukaryotic cells. Eukaryotic repressors function similarly to their prokaryotic counterparts in that they bind to specific DNA sequences and suppress transcription.
What method does eukaryotes, but not prokaryotes, primarily use to regulate gene expression?Transcription has a major role in regulating prokaryotic gene expression. Epigenetics, transcription, post-transcription, translation, and post-translation are all involved in the regulation of eukaryotic gene expression.
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by causing host cell to polymerize at one end of the bacterial cell, certain bacteria can propel themselves from the interior of one cell directly into the interior of an adjacent cell, allowing them to avoid extracellular immune response mechanisms.
By causing host cell actin to polymerize at one end of the bacterial cell, certain bacteria can propel themselves from the interior of one cell directly into the interior of an adjacent cell, allowing them to avoid extracellular immune response mechanisms.
The filaments bring together from actin monomers with a sure ATP. After polymerization, actin swiftly hydrolyzes the sure ATP and slowly dissociates the γ-phosphate. ADP-actin filaments then disassemble to recycle the subunits of low ionic energy, actin filaments depolymerize to monomers.
Actin then polymerizes spontaneously if the ionic energy is expanded to physiological levels. The first step in actin polymerization (referred to as nucleation) is the formation of a small combination inclusive of 3 actin monomers.
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there are three alleles at a specific locus in a population of humans. allele d1, d2, and d3 with frequencies 0.42, 0.30, and 0.28 respectively. true or false or cannot determine: allele d1 is dominant.
The D1 allele is the most frequent at a specific locus in a population of humans: alleles D1, D2, and D3 with frequencies of 0.42, 0.30, and 0.28 respectively.
A population's allele frequency is calculated by dividing the number of copies of the allele of interest in that population by the total number of copies of all the alleles present at that particular genetic locus.
If gametes accidentally bind together to form zygotes and all the alleles occur at the identical frequency in the sperm and egg cells, the probability that any two alleles will combine to create a certain genotype equals the product of the allele frequencies.
The complete question is:
There are three alleles at a specific locus in a population of humans: alleles D1, D2, and D3 with frequencies of 0.42, 0.30, and 0.28 respectively. What can you say confidently about the D1 allele? Check all that apply.
A. The D1 allele is the most frequent.
B. The D1 allele is advantageous.
C. The D1 allele is dominant.
D. The D1 allele is rare.
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the most common complication of pregnancy is: group of answer choices gestational diabetes preeclampsia severe nausea and weight loss caused by hyperemesis gravidarum ectopic pregnancy
Most women in pregnancy experience nausea & vomiting, and only a small minority experience the extreme variant known as hyperemesis gravidarum.
Preterm birth, fetal growth restriction (FGR), intrauterine fetal mortality, and HELLP syndrome with increased risk of liver rupture and eclampsia are the most frequent consequences associated with preeclampsia. It's typical to have nausea or sickness in the early weeks of pregnancy. Although some women may experience morning sickness for more than three months, it often happens during the first 3 months of pregnancy. Even though it is referred to as morning sickness, it might continue all day. If a woman does not already have diabetes, she may acquire gestational diabetes during pregnancy. Gestational diabetes affects somewhere between 2% and 10% of pregnancies each year in the US. Maintaining control of gestational diabetes will ensure a safe pregnancy and healthy birth.
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in hemoglobin, multiple choice question. oxygen attaches to the fe atom in the heme, while carbon dioxide attaches to a cu atom in the protein portion. oxygen attaches to the fe atom in the heme, while carbon dioxide attaches to the protein portion. oxygen attaches to the protein in portion, while carbon dioxide attaches to the fe atom in the heme.
Two hockey players are skating on a frozen pond. One skater falls through the ice into the water.
Explain how negative feedback can keep the skater who fell in alive. Explain how positive
feedback can provide physical assistance to the friend trying to save him.
The answers include the following below:
Negative feedback can keep the skater who fell in alive by the low temperature being regulated by an increase.Positive feedback can provide physical assistance to the friend trying to save him by the release of adrenaline to initiate fight/flight response.What is Feedback?This is defined as a response within a system that influences the continued productivity of that system and there are two types which are positive and negative feedback.
In this scenario, positive feedback can provide physical assistance to the friend trying to save him by the release of adrenaline which is a type of hormone responsible to initiate fight/flight response.
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If a plant that is homozygous dominant for a gene is crossed with a plant that is homozygous recessive for the same gene, what is the probability that the offspring will have the same genotype as one of the parents? Same phenotype?
If a plant that is homozygous dominant for a gene is crossed with a plant that is homozygous recessive for the same gene, the probability that the offspring will have the same genotype as one of the parents is 0. The probability that the offspring will have the same phenotype as one of the parents is 0.25.
In genetics, a gene is a unit of heredity that is passed down from parent to offspring. Genes are made up of DNA, and they encode the instructions for making proteins that determine an organism's traits. A gene can have different versions, called alleles, that can result in different traits.
When an organism is homozygous for a gene, it means that it has two copies of the same allele for that gene.
For example, if a plant is homozygous dominant for a gene, it means that it has two copies of the dominant allele for that gene. Similarly, if a plant is homozygous recessive for a gene, it means that it has two copies of the recessive allele for that gene.
When two plants that are homozygous for different alleles of the same gene are crossed, the offspring will inherit one allele from each parent. In this case, all of the offspring will be heterozygous for the gene, meaning that they will have one copy of the dominant allele and one copy of the recessive allele.
Since none of the offspring will have the same genotype as either parent, the probability that the offspring will have the same genotype as one of the parents is 0.
The phenotype of an organism is the physical expression of its genotype, or the combination of alleles that it carries for a given gene. In this case, the plants that are homozygous dominant for the gene will have the dominant trait, while the plants that are homozygous recessive for the gene will have the recessive trait.
Since the offspring of the cross will be heterozygous for the gene, they will have the dominant trait. Therefore, the probability that the offspring will have the same phenotype as one of the parents is 0.25, or 1 in 4.
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What are the four classes of large organic molecules important to life on earth?.
Proteins
Carbohydrates
Lipids
Nucleic acids
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9. hypersensitivity reactions to penicillin have been identified that correspond to what type of reactions?
However, hypersensitivity is its main side effect, which can cause nausea, vomiting, pruritus, urticaria, wheezing, laryngeal oedema, and finally cardiovascular collapse.
Any unfavorable immune system-induced reactions, such as allergies and autoimmune diseases, are referred to as hypersensitivity (also called hypersensitive reaction or intolerance). These reactions—often referred to as an immune system overreaction—can be harmful and painful. Contrast this immunologic phrase with the psychiatric term "hypersensitive," which refers to someone who may be abnormally sensitive to physical (such as sound, touch, light, etc.) and/or emotional stimuli in immune system. Despite the fact that there is a correlation between the two, research have shown that those with ADHD (a psychiatric disease) are more likely to also have hypersensitivity reactions.
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suppose a researcher conducts an anova analysis that compares three different treatments for depression: medication, cognitive behavioral therapy, and a control condition. the p-value for the f statistic is .04. which of the following statements is true?
c. At least one pair of treatment conditions has different means. The ANOVA test is used as the first stage in examining the variables that influence a certain data set.
After the test is complete, an analyst runs additional tests on the procedural treatment elements that measurably contribute to the inconsistent nature of the data set. In order to produce more data that is consistent with the suggested regression models, the analyst uses the ANOVA test findings in an f-test.
Using the ANOVA test, you can compare more than two groups at once to see if there is a correlation between them. The F statistic, or F-ratio, which is the outcome of the ANOVA formula enables the examination of several groups of data to ascertain the variability within and across samples. The F-ratio result of the ANOVA will be relatively close to 1 if there is no discernible difference between the tested groups, which is known as the null hypothesis. The F-distribution is the distribution of each and every value that the F statistic could take. In reality, this is a collection of distribution functions, and the numerator degrees of freedom and denominator degrees of freedom are its two distinguishing characteristics.
The complete question is:
Suppose a researcher conducts an ANOVA analysis that compares three different treatments for depression: medication, cognitive behavioral therapy, and a control condition. The p-value for the F statistic is .04. Which of the following statements is true?
Select one:
a. All three pairs of groups have different means, within sampling error
b. All three groups have identical means
c. At least one pair of treatment conditions has different means
d. At least two of the three pairs of treatment conditions have different means
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The peripheral nervous system is composed of the:_______.
The peripheral nervous system is divided into two main parts: Autonomic nervous system (ANS) and Somatic nervous system (SNS).
The peripheral nervous system is one of two components that make up a bilateral animal's nervous system, the other being the central nervous system. The PNS is made up of nerves and ganglia that are located outside of the brain and spinal cord.
The two components are the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS, which includes the brain and spinal cord, is the site of information processing and control, whereas the PNS includes all nerves in the body that are connected to the CNS (brain and spinal cord).
The nerves and ganglia are peripheral nervous system organs. Nerves are made up of bundles of nerve fibers, just like muscles are made up of bundles of muscle fibers. Cranial and spinal nerves connect the CNS to peripheral organs like muscles and glands.
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The cycle of events that initiates gonadarche involves signals from the hypothalamus to the pituitary gland, which secretes hormones that in turn stimulate production of hormones in the __________________.
GONADS
The testes in men and the ovaries in women are the gonads, which are the primary reproductive organs. Sperm and ova are produced by these organs, which are termed endocrine glands since they exude hormones.
A mixed gland that creates both an organism's gametes and sex hormones is known as a gonad, sex gland, or reproductive gland. Male and female reproductive cells are called sperm and egg, respectively. Sperm are created by the male gonad, or testicle, in the form of spermatozoa. Egg cells are made in the ovary of the female gonad. These haploid gametes are both present. An ovotestis is a particular kind of gonad seen in several hermaphrodite mammals.
In certain lower invertebrate taxa, the gonads are transitory organs, whereas in higher forms, they are permanent. One invertebrate, such as an oligochaete worm or a leech, can have both male and female gonads. Sponges lack distinct gonads; instead, amoebocyte clusters in the body wall give rise to reproductive cells. The gonads of echinoderms, such as starfish, are typically hanging from the radiating arms directly into the water.
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Biologists divide the biosphere into ______, which are the major types of ecosystems on earth.
The biosphere is divided into the major categories of ecosystems found on earth, according to biologists.
What criteria are used to categorize biomes?An place is categorized as a biome based on the species that call it home. Scientists can define a biome by defining the temperature range, soil type, amount of light, and water that are peculiar to a location and create niches for particular species.
What are the two primary categories for biomes?Deserts, woods, grasslands, savannas, tundra, and freshwater ecosystems are examples of biomes that fall under the categories of terrestrial and aquatic, respectively.
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Activity 4. In a monohybrid cross of corn plants, purple seeds (p) are dominant to yellow (y). Both parents in the original cross are homozygous. What are the possible gametes for the purple parent?.
In a monohybrid cross of corn plants, purple seeds (p) are dominant to yellow (y). Both parents in the original cross are homozygous. The possible gametes for the purple parent are p.
An organism's genotype generally refers to the genetic makeup of the organism. Each gene is represented by two alleles, also known as alternative forms of the gene.
When the same alleles represent a gene, such genes are called homozygotes, whereas when the alleles differ, such genes are called heterozygotes.
In this case, the purple seed allele is denoted by p and the purple parent is said to be homozygous. Therefore, the genotype is definitely pp.
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