Two genes interact to produce various phenotypic ratios among F2 progeny of a dihybrid cross. Design a different pathway explaining each of the F2 ratios below, using hypothetical genes R and T and assuming that the dominant allele at each locus catalyzes a different reaction or performs an action leading to pigment production. The recessive allele at each locus is null (loss-of-function). Begin each pathway with a colorless precursor that produces a white or albino phenotype if it is unmodified. The ratios are for F2 progeny produced by crossing wild-type F1 organisms with the genotype RrTt.
9/16 Dark Blue 6/16 light blue 1/16 white
A) At least one copy of each dominant allele results in dark blue, at least one copy of either dominant allele produces light blue, and the absence of both dominant allele produces white.
B) If both dominant alleles are present, the result is dark blue. At least one copy of one specific dominant allele is required for light blue. If that dominant allele is not present, the result is white, regardless of whether the other dominant allele is present.
C) At least one copy of both dominant alleles results in dark blue; at least one copy of one of the dominant alleles also results in dark blue, but at least one copy of the other dominant allele produces light blue; and the absence of either dominant allele produces white.
Answers
Answer:
The correct option is A) At least one copy of each dominant allele results in dark blue, at least one copy of either dominant allele produces light blue, and the absence of both dominant allele produces white.
Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files
Related Questions
The light-independent reactions of photosynthesis, also known as the Calvin cycle, must repeat three times in order for a cell to have enough material to construct half a glucose molecule. A variety of molecules are used and produced during this process. Identify the molecules into three categories: molecules brought in and used in three turns of the Calvin cycle, molecules produced during three turns of the Calvin cycle that leave the cycle, and molecules used and regenerated within the Calvin cycle during three turns.
Answers
Answer:
- molecules brought in and used in three turns of the Calvin cycle = carbon dioxide (CO2)
- molecules produced during three turns of the Calvin cycle that leave the cycle = Glyceraldehyde-3-phosphate (G3P)
- molecules used and regenerated within the Calvin cycle during three turns = Ribulose bi phosphate (RUBP)
Explanation:
The second stage of photosynthesis, called CALVIN CYCLE, occurs in the stroma of the chloroplast. The processes that occur in this stage can be divided into three stages namely: carbon fixation, reduction and regeneration.
As rightly stated in this question, the calvin cycle must repeat three times in order for a cell to have enough material to construct half a glucose molecule. Hence;
- In carbon fixation, molecules of carbon dioxide (CO2) are brought in and used in three turns of the Calvin cycle. The CO2 combines with a CO2 acceptor called RUBP (ribulosebiphosphate) to produce PGA (3-phosphoglycerate).
- In the reduction stage, PGA is reduced to Glyceraldehyde-3-phosphate (G3P). This G3P molecule is produced during three turns of the Calvin cycle and leaves the cycle to be used to form glucose.
- In the regeneration stage, remaining molecules of G3P are used to regenerate RUBP in order for the cycle to continue. Hence, RUBP molecules are used and regenerated within the Calvin cycle during three turns.
If a nation has 120 million employed people and 15
million unemployed people, what is the unemployment rate?
Answers
Unemployment rate
=
7.7
159.2
Unemployment rate
=
0.0487
Unemployment rate
=
4.8
percent
Unemployment rate=
7.7
159.2
Unemployment rate=0.0487 Unemployment rate=4.8 percent
please help me i have to have this finished by 12:35 at the most
Answers
You are a mad scientist tasked with the evil job of designing a novel species. This species will be introduced to an ecosystem
and must cause as much damage as possible. What abilities and characteristics will you give this species to make it
successful? Be sure to explain why you choose each aspect. Explain your choice in 3-5 sentences. (4 points)
Answers
Answer: The new animal species I would release into an ecosystem would be aquatic animals. One that could affect the water supply in the ocean, causing the collapse of the ecosystem I place my animal in. My animal would be a shark-like creature of the otodontidae shark family with skin so tough, not even a harpoon could pierce, to protect itself from predators. I would give my animal the immortal ability of a genus hydra so it can never be killed. My species would also release toxic chemicals into the water destroying other living organisms in the water and poisoning any creature that drinks the water. The species would thrive without the need for water or substance like other creatures and have the ability to adapt to any situation or environment so it can survive in any ecosystem I were to place it into.
Novel species are newly designed or discovered species. The organism is altered genetically and is different in some characteristics from its original. I will create an aquatic animal.
How an imaginary novel species can be created?For this imaginary question, I will introduce aquatic species in the ecosystem. As it will affect the aquatic ecosystem of the water and will affect the oceanic life.
I will modify and alter the genes of the piranhas family as they are already very dangerous and any modification in them would create monster species. I will combine some of the genes of the other very dangerous animal with that of the piranhas.
Also, I will combine the ability of regeneration and immortality with the new novel species. I will increase their attacking capability and will add some poisonous chemicals to be released while they hunt to kill their prey.
In addition, I will make them capable to survive in terrestrial places as well so that they can even survive without water.
Learn more about novel species here:
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what is a cell membrane and its functions
Answers
Answer:
The cell membrane is a strip of membrane around the cell and it keeps bad things from entering the cell
Explanation:
Which statement explains the benefit of crossing over during the process of meiosis?
A. Crossing over allows the cell to go through two cell divisions.
B. Crossing over allows the final daughter cells to be genetically different.
C. Crossing over allows tbe chromosomes to match up with their homologus pairs.
D. Crossing over allows tbe chromosomes to evenly distribute among the daughter cells.
Answers
Answer:
B. Crossing over allows the final daughter cells to be genetically different
Meet the Johnson family. Crystal and Andre are the parents. They have four children: Scarlet, Ben, Joel, and Clarissa.
Number your answers for each question in the essay box below.
Use this table to help you answer the questions:
Answers
Answer:
Answer:
1.
a)dd
b) dd
c) 0%
2.
a) 25%
b) 75%
c) 25%
3.
a) 03
b) 0
c) tt
4.
a) FF x ff OR FF x Ff OR FF x FF
b) Because all the children have freckles
5.
a) 4:0
b) 100%
6.
a) 50%
b) Bb
c) 3 out of 6 (including parents)
Which of the following conclusions can be made from this experiment?
A Only Salmonella can send genes to CJ bacteria. how did detectives nab the suspect based on the pod evidence
B Only E. Coli can send genes to CJ bacteria.
C Neither Salmonella nor E. Coli can send genes to CJ bacteria.
D Both Salmonella and E. Coli can send genes to CJ bacteria.
Answers
Answer:
C. Neither Salmonella nor E. Coli can send genes to CJ bacteria. :))
Explanation:
The conclusions of the experiment are that Neither Salmonella nor E. Coli can send genes to CJ bacteria.
How can you tell the difference between E. coli and Salmonella in a lab?
The main contrast between E. coli and salmonella is that E. coli is a type of commensal bacteria that commonly lives in the lower intestine of warm-blooded animals whereas Salmonella is a facultative, intracellular pathogen in both warm-blooded and cold-blooded animals.
Thus, Neither Salmonella nor E. coli can send genes to CJ bacteria.
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Photosynthesis occurs when___
Answers
Answer:
D. All of the above
Answer: all of the above. Hope this helps can u give me brainliest
Explanation:
In a flower, the anther is attached to filament. What advantage does the filament provide to the anther?
A. The filament elevates the anther to allow for easier transport of pollen by wind or insects.
B. The filament provides the anther with nutrients to produce pollen grains.
C. The filament protects the anther from harsh sunlight and insects.
D. The filament produces a sticky surface to allow the anther to capture pollen.
Answers
The correct answer is A. The filament elevates the anther to allow for easier transport of pollen by wind or insects.
Explanation
The filament of a flower is the sterile part of the stamen (male organ of the flower) that is located just below the anther. Its function is structural to hold the sling so that it is accessible to insects. The filament is usually cylindrical and fine. Therefore, the correct answer is A. The filament elevates the anther to allow for easier transport of pollen by wind or insects.
Name two reasons that viruses are considered nonliving.
Answers
Answer:
The virus simply can't replicate. Viruses fail the second question for the same reason. ... Finally, a virus isn't considered living because it doesn't need to consume energy to survive, nor is it able to regulate its own temperature. Viruses are not made out of cells, they can't keep themselves in a stable state, they don't grow, and they can't make their own energy. Even though they definitely replicate and adapt to their environment, viruses are more like androids than real living organisms.
Explanation:
Viruses, like bacteria, are microscopic and cause human diseases. ... Viruses also lack the properties of living things: They have no energy metabolism, they do not grow, they produce no waste products, and they do not respond to stimuli. They also don't reproduce independently but must replicate by invading living cells.
I hope this helps you out with your question! Can you plz consider marking me brainliest and thanks! Plz tell me how the answer was! It feel nice to be appreciated! Comment /free for a giveaway entry of 20 thanks and 2 brainliest. Have an awesome day! Let me know if you have any questions! -KaraYeaton18
Corona means____ and most human corona viruses cause ____ symptoms in humans. A. Circle, mild B. Crown, major C. Crown, mild
Answers
Answer: the answer is c for both
Explanation:
Where are diploid cells found ?
A. only in reproductive organs
B. only in twin siblings
C. through out the body
D. only in the lungs
Answers
Answer:
c
Explanation:
diploid cells are cell that have 2 genetic alleles, one from your mom and one from dad, so all your cells are diploid, except haploid cells in the rep system.
Help me out really appreciate it
Answers
Answer:
B
Explanation:
B says that light moths live longer, and in the chart you can see in the light moth section that it is true.
Answer:
the answer is B :)
Explanation:
The combination of fibers and ground substance in fluid connective tissue is known as
A) ground substance
B) fat
C) cytosol
D) plasma
Answers
A cleft chin in humans is coded by the dominant allele C. A chin without a cleft is coded by the recessive allele c. A man with a cc allele combination for the trait produces a zygote with a woman with a Cc allele combination for the trait. Which allele combinations could occur in the zygote?
Answers
Answer:
The allele combinations are: Cc, cc, Cc, cc
Phenotypically there is a 50% chance that the child will be born with or without the cleft
The allele combinations that could occur in the zygote is Cc or cc.
What is an allele combination?An identification of the specific alleles found at each of the relevant mouse loci on the two homologous chromosomes (i.e., all allele pairs of a genotype). One or more allele pairs can make up an allele combination.
Genetic linkage is the capacity of a chromosome to transmit alleles that are near to one another as a whole unit through meiosis. Inheritance of traits is also understood by this principle. It is useful in locating the genes that are in charge of characteristics and diseases.
The person is homozygous for the allele if the two alleles are the same. The person is heterozygous if the alleles are different.
Therefore, the zygote may include the allele combinations Cc or cc.
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Which pair best matches a type of land cover with an appropriate land use?
• A. Forestland -> Growing crops
• B. Urban land -> Growing crops
• C. Pastureland -> Grazing livestock
• D. Developed land -> Grazing livestock
Answers
Answer:
option C is correct answer of this question
=> pastureland = Grazing livestock
hope it helps
Answer:
C
Explanation:
Environmental scientists calculating pollutant half-lives often define a transport rate constant that is analogous to a reaction rate constant and describes how a pollutant moves out of an ecosystem. In a study of the gasoline additive MTBE in Donner Lake, California, scientists from the University of California, Davis, found that in the summer the half-life of MTBE in the lake was 26.01 days. Assume that the transport process is first order. What was the transport rate constant of MTBE out of Donner Lake during the study
Answers
Answer:
k ≈ [tex]2.7 *10^{-2} d^{-1}[/tex]
Explanation:
For a first order reaction
Half life ( [tex]t_{1/2}[/tex] ) = 0.693 / k
k = rate constant
[tex]t_{1/2}[/tex] = 26.01
hence k = 0.693 / ( 26.01)
k ≈ 2.7 * 10^-2 d^-1
This is a detailed simple solution as required
the mRNA will have the base sequence--
Answers
Answer:
Determining mRNA Sequence
DNA is used as a template for the cell to build mRNA. DNA utilizes four bases, adenine (A), guanine (G), cytosine (C), and thymine (T), in its code. RNA also uses four bases. ... Therefore, if your DNA sequence is 3' T C G T T C A G T 5', the mRNA sequence would be 5' A G C A A G U C A 3'.
Explanation:
Hope this will help
Which has the highest density?
A. water at 0°C
B. water at 4°C
C. water at 6°C
D. water at 8°C
Answers
the community interact with the air water soil sunlight and other non living things in its surrounding is what we call
Answers
Explanation:
non living things in their environment are called "matrix" its environment is what supports living and non living things...
what is the cause of down syndrome
Answers
Answer:
there is multiple causes is this an acual question??????
Explanation:
17. Why do scientists gather large amounts of data about the state of the atmosphere?
O A. to make weather maps and accurately predict local weather
B. to keep busy, look important, and try out new computer programs
O C. to write scientific texts and documents for publication
O D. to compare the amchort of data gathered with other science disciplines
Turn In
Answers
Answer:
The correct answer is - option A. to make weather maps and accurately predict local weather.
Explanation:
Among all the options the best explanation is that scientists collect large amounts of data about the state of the atmosphere to create a map of the weather of a particular area and predict the local are weather accurately.
They collect precipitation, humidity, wind direction, wind speed and many more detailed data to study the weather of the area and predict the future weather forecast.
Thus, the correct answer is - option A. to make weather maps and accurately predict local weather.
Consider a breeder that mates two heterozygous black Staffordshire bull terriers over the course of three years. The dam eventually produces 16 puppies: 11 are black like the parents, 4 turn out white, and 1 turns out gray colored. As a genetics student, what do you think of this outcome
Answers
Answer:
Different colour occur due to heterozygous nature.
Explanation:
Most of the puppies just like parents because the black colour gene or allele is dominant over other colour allele whereas other colour puppies also formed due to presence of heterozygous type of alleles. Other colour occurs due to appearance of recessive allele in the physique of the offspring or formation of hybrids occurs which causes colour other than black and white in the offspring. In the F1 generation all the offspring resembles to the male parent but after this generation some offspring resembles to male, some are hybrids and other resembles to female.
what do you call a soft ,heated mass of crushed leaves and other substances that spread over the skin to treat swelling or pain ?
a.bandage
b.ointment
c.poultice
d.solution
Answers
In fruit flies, curved wings (w) are recessive to the dominant straight wings (W), and ebony body (b) is recessive to the dominant gray body (B). A fly that has curved wings and ebony body is crossed with a fly that has straight wings and gray body. Of the offspring there were approximately equal numbers of straight gray, straight ebony, curved gray, curved ebony. What are the genotypes of the parents and offspring
Answers
Answer:
The correct answer =
parents : WwBb x wwbb
offspring :
WwBb, Wwbb, wwBb, and wwbb
Explanation:
It is given that the straight wings (W) is dominant over curved wings (w) and the ebony body (b) is recessive to the dominant gray body (B) and there is a cross between curved wings and ebony body and straight wings and gray body is made. The phenotypic ratio is: 1:1:1:1 for the four different phenotypes straight gray, straight ebony, curved gray, curved ebony.
It is not given the genotype of parents, however, for the curved and ebony fly, it is clear that both alleles are recessive as recessive alleles only appear in absence of the dominant allele of the trait.
For another parent, the possible genotypes can be WWBB or WwBb, however in the case of WWBB the phenotypic ratio would not be equal therefore,
crossing WwBb x wwbb
This can be represented in the form of a punnett square as below:
wb wb wb wb
WB WwBb WwBb WwBb WwBb Straight wing, Gray body
Wb Wwbb Wwbb Wwbb Wwbb Straight wing, Ebony body
wB wwBb wwBb wwBb wwBb Curved wing, Gray body
wb wwbb wwbb wwbb wwbb Curved wing, Ebony Body
The phenotypic ratio is: 1:1:1:1 for the four different phenotypes
Definition of biology?
Answers
Answer:
the study of living things
Explanation:
Hope this will help
Answer:
the study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behavior, origin, and distribution.
Explanation:
The word biology is derived from the greek words /bios/ meaning /life/ and /logos/ meaning /study/ and is defined as the science of life and living organisms. An organism is a living entity consisting of one cell e.g. bacteria, or several cells e.g. animals, plants and fungi.
hy help me do this fast plzz
bonus points
Answers
If a lock and key fit perfectly together and then one day the key melts and then it is now more droopy and no longer can fit into the lock, then that key wont work for the lock anymore. It's the same as if an enzyme breaks down a bit and now the shape doesn't fit perfectly, the enzyme doesn't work anymore
22) During durg adminsteration not necesary tell
to the patient
A) Prupase of durg
B) Side effect of durg
C) Route of mrdication
Answers
PLEASE HELP
how does DNA code for certain traits?
- DNA provides a set of chemical instructions to specific genes that the gene use to make proteins in order to determine traits.
- DNA receives a set of chemical instructions from the environment that it uses to make proteins in order to determine traits.
- DNA receives a set of chemical instructions from the nucleus that is used to make proteins in order to determine traits.
- DNA provides a set of chemical instructions to cell that the cell uses to make proteins in order to determine traits.
Answers
Answer: DNA provides a set of chemical instructions to specific genes that the gene uses to make proteins in order to determine traits.
Explanation: Genes provide instructions that are used to determine the sequence of amino acids needed to make up a protein.