Answers
Answer:
Darkened shapes are recessive
Explanation:
In the pedigree shown, we can see that 2 parents that are unshaded shapes have 2 children that are shaded shapes. This would be impossible if shaded shapes were dominant and unshaded shapes were recessive. This is because parents that have a recessive trait have 2 of the same alleles. So if 2 parents that both have a recessive trait have a child, the child will definitely have that trait. But we can see that this is not the case, the parents have 2 offspring that have different phenotype from the parents. This must mean the parents are heterozygous, meaning that they both have 2 alleles that are different. The dominant allele masks the recessive allele, so the dominant allele is expressed. In this case, the children inherited 2 recessive alleles, 1 from each parent, making them have a different phenotype from the parents.
Related Questions
Organisms that use energy to control their internal conditions are
Answers
Answer:
regulators
Explanation:
regulators use their metabolism to control their internal environment
Which Texas ecoregion described below was formed due to weathering and erosion? A Edwards Plateau - home to rare organism that live in canyons B. Piney Woods - high density of vegetation, pines, oaks, and croplands with nutrient rich soil CC Crosstimbers - high concentration of trees, plains and parries with soil that drains water easily D Post Oak Savannah - transitional area of plant life ranging from grasslands to forests with fertile soll can yi
Answers
Answer:
d
Explanation:
because
2. When an object gets warmer it is:
a. loosing energy
b. keeping the same energy
c. gaining energy
Choose one correct answer.''
Answers
why animals need to move quickly
Answers
Answer:
Animals move for a variety of reasons, such as to find food, a mate, a suitable microhabitat, or to escape predators. For many animals, the ability to move is essential for survival and, as a result, natural selection has shaped the locomotion methods and mechanisms used by moving organisms.
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Among Delta-back stripped fish, there are two genes that segregate independently of one another. Suppose the alleles at the first locus are A (dominant) and a (recessive) and the alleles at the second locus are B (dominant) and b recessive). If an AABB fish mates with an aabb fish, and their offspring are inter-crossed, the proportion of F2 fish that show a recessive phenotype at the first locus and a dominant phenotype at the second is:
Answers
Answer:
4/16
Explanation:
It is given that the alleles of the first locus = A dominant and recessive a
The allele of the second locus = B dominant and the recessive b.
Now if fish with AABB mates with the aabb fishes, then to tell the proportion of the F2 fish which shows either the dominant phenotype at the [tex]$\text{first locus}$[/tex] and also a recessive phenotype at the [tex]$\text{second locus}$[/tex].
So for this, the recessive phenotype at the [tex]$\text{first locus}$[/tex] as well as the recessive phenotype at the [tex]$\text{second locus}$[/tex] is in the ratio of 4/16.
So, if life started aquatic how did it evolve for land and why?
Answers
Answer:
So when the first animals moved onto land, they had to trade their fins for limbs, and their gills for lungs, the better to adapt to their new terrestrial environment
Explanation:
Answer:
abilites
Explanation:
How does the body structure evolve for animals as they transmit between the two environments?
Answers
Answer:
Biologists believe that new species evolve from existing species by a process called natural selection. ... Organisms that inherit that favorable new gene are likely to become more abundant than others of the species. Sometimes the population of a species becomes separated into two areas, by geography or by climate.
Explanation:
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Answers
Mitosis creates...
A) 4 identical cells
B) 2 identical cells
C) 4 unidentical cells
D) 2 unidentical cells
Answers
Answer:
B) 2 identical cells
Explanation:
"Mitosis is a type of cell division which produces two identical diploid daughter cells. "
During his dihybrid experiments on yellow round peas and wrinkled green peas , Mendel noticed four phenotypic categories of the f2 progeny with the ratio 9:3:3:1 . explain and show how he came up with the 9:3:3:1 ratio
Answers
Answer: stop cheating mr.lazzo, I'm calling your parents
Which description accurately describes the cell membrane?
a. a single permeable layer of phospholipids that have hydrophobic heads and hydrophilic tails
b. a semi-permeable double layer of phospholipids that have hydrophilic heads and hydrophobic tails
c. a single permeable layer of phospholipids that have hydrophilic heads and hydrophobic tails
d. a semi-permeable double layer of phospholipids that have hydrophobic heads and hydrophilic tails
e. a barrier of polypeptides that prevents molecules from entering or leaving the cell
Answers
Answer:
b. a semi-permeable double layer of phospholipids that have hydrophilic heads and hydrophobic tails
Explanation:
B is correct as the cell membrane is selectively semi-permeable. It is selectively semi-permeable because this quality allows it to control what can and can't enter the cell, and how it does so.
The cell membrane also has a phospholipid bi-layer comprised of a double layer of phospholipids which have hydrophilic head and hydrophobic tails. This is because the heads are made of phosphate and are polar and are therefore attracted to water (hydrophilic), while the tails are made of lipids (i.e. fats, oils) which do not mix with water and are therefore hydrophobic.
The properties of each phospholipid is also why they form the double layer structure, the hydrophilic heads naturally face outwards into the water and protect the hydrophobic tails on the inside.
Hope this helped!
Draw a diagram of the gray wolf food web in Yellowstone National Park. Include at least three levels of predator/prey relationships as well as at least one example of a consumer, producer, and decomposer.
What is this asking me? Can someone please explain this better to me?
Answers
Answer:
You need to draw a diagram of the gray wolf food web in Yellowstone National Park. That includes at least one example of a consumer, producer, and decomposer.
Explanation:
I'm sorry if this doesn't help.
the word root that means lung is
Answers
Answer:
I think is Pulmonarycorrect me if I'm wrong
PLEASE HELP!!!!!!
The process that produces 2 genetically different cells is
A) mitosis
B) mitosis and meiosis
C) meiosis II
D) meiosis I
Answers
Answer:
b
Explanation:
Meiosis has both similarities to and differences from mitosis, which is a cell division process in which a parent cell produces two identical daughter cells. Meiosis begins following one round of DNA replication in cells in the male or female sex organs.
Where is air density greater on the mountain
Answers
Answer:
the bottom
Explanation: The air at the top of the mountain is going to be much less dense than the air at the bottom of the mountain because it is affected less by gravity.
Suggest why redox indicators highlight aerobic respiration.
Answers
Answer:
Cellular respiration involves many reactions in which electrons are passed from one molecule to another. Reactions involving electron transfers are known as oxidation-reduction reactions (or redox reactions).
What makes a fossil an index fossil
A.The fossil does not contain trance of DNA
B. The fossil Connor be dated using radioactive dating
C. The fossil comes from an Anaimal that did not evolve
D the fossil was formed only during certain shot time period
Answers
Answer:
A
Explanation:
what has the most biodiversity: tundra, taiga, temperature forest, tropical rain forest, grassland, or desert?
Answers
What process releases
the phosphate minerals?
Answers
Answer: weathering
Explanation:
Since we can't drink ocean water due to its salt content, why is polluting the oceans so much a concem for people? Write your response in the essay box below.
Answers
answer:
we can't pollute water because there are creatures and organisims that live in the water so if we pollute it then they will die, besides you can filter the water to get rid of salt then you're able to drink the water and also use it for many other purposes.
This paramecium has a nucleus and is comprised of one cell. Which terms best describe this organism?
Answers
Answer: The term that best describes this organism is that it's a UNICELLULAR PROTISTA.
Explanation:
Unicellular organisms are that are made up of just one cell. They are also called single- celled organisms. Examples of unicellular organisms include: Amoeba, chlamydomonas and paramecium.
The paramecium is a protist which is SINGLE-CELLED and is made up of eucaryotic cells in which the cell structure is complex with a well-defined NUCLEUS.
The structure of this organism helps it to survive in its environment. It has cilia that helps it move food into its gullet.
The food vacuole circulate along a definite path in the cytoplasm. The anterior and posterior contractile vacuole, with radiating channels draining into them, helps to get rid of excess water from the body. The food vacuoles circulate along a definite path in the cytoplasm. The anterior and posterior contractile vacuole, with radiating channels draining into them, helps to get rid of excess water from the body.
The NUCLEUS is used by the organism for sexual reproduction. This occurs in a process known as conjugation whereby the whole organism pair with another similar whole organism and exchange their nuclei.
4. What advantage do plankton gain by storing lipids within their bodies?
a. It makes them less dense than water, thus aiding in buoyancy.
b. It forms air pockets that makes them more buoyant.
c. It allows them to store large amounts of energy.
d. It makes their cells heavier so they sink into the water.
e. It increases their density so they sink into the water.
Answers
Answer:
Option A, It makes them less dense than water, thus aiding in buoyancy
Explanation:
Lipids stored with in the body of planktons make them capable to float in water against the buoyancy force of water in the down ward direction by reducing the overall density of the planktons. Hence, option A is correct
Strawberry poison dart frogs have different skin colors within their population. The frogs can be categorized broadly using the colors green, blue, yellow, and red. A
researcher performs an experiment using colored clay frogs to represent the different types of frogs to investigate which color morph is preyed upon the most by
snakes. The researcher compares the number of snake attacks on each of the four different colored clay frogs.
200-
150-
Number of Attacks
100
50-
0
green
Blue yellow red
Color of Clay Frogs
Which distribution of strawberry poison dart frogs is likely to exist in nature?
There will be more red-colored frogs in the population than green-colored frogs.
There will be more yellow colored frogs in the population than red-colored frogs
There will be more green colored frogs in the population than yellow-colored frogs.
There will be more blue colored frogs in the population than yellow-colored frogs.
Answers
Answer:
There will be more yellow-colored frogs in the population than red-colored frogs
Explanation:
Available data:
Strawberry poison dart frogs have different skin colorsThe frogs can be categorized broadly using the colors green, blue, yellow, and red.Frogs eaten by snakesNumber of snake attacks Frog color
145 Approx Green
180 Approx Blue
125 Approx Yellow
145 Approx Red
The phenotype of individuals and the environment where they live, interact and determines the genes´ destiny in space and time. The result of this interaction and the gene destiny is Natural Selection. Natural selection selects beneficial alleles and increases their frequency in the population.
The attack by snakes is acting as a selective pressure on the frogs´ population. It is an ecological pressure that is modeling the frogs´ phenotype.
Animals that suffer more attacks are the blue ones, followed by green and red frogs. Those that suffer the fewest number of attacks are the yellow individuals.
So natural selection will be acting on this population favoring the alleles that code for yellow color. Genes that express yellow color increase more the frogs´ fitness than genes that code for the other colors. So natural selection increases the frequency of genes coding for yellow color and will decrease the frequency of the other alleles. Probably the less favored will be genes that express blue.
What are the main features of tropical climate
Answers
Its characteristic is the high temperature and the division of two seasons: rainy in summer and dry in winter. In regions affected by this type of climate, it is not possible to notice the change of seasons.
A 20.0 gram sample of a certain radioisotope decays over a
period of 19.2 hours. After that time, only 2.50 g of the isotope
remains. Calculate the half-life.
Answers
quantity of the substance remaining = initial quantity of the substance * (.5)^(time elapsed/half life of the substance)
2.50 = 20 * (.5)^(19.2/x)
The half-life period of the given sample of the radioisotope is equal to 6.41 hours.
What is the half-life period?The half-life of a radioactive substance is defined as the time that is required to reduce the original quantity of a radioactive element to half after decay.
Half-life of a radioactive element is the characteristic of the element and does not depend upon the initial amount of the radioactive substance.
Given, the original amount of the radioisotope, N₀ = 20.0 g
The remaining amount of the radioisotope, N = 2.50 g
The time for which decay occurs, t = 19.2 hours
Consider that k is the rate constant of the decay of radioisotope,
[tex]k =\frac{2.303}{t} \times log \frac{N_0}{N}[/tex]
[tex]k =\frac{2.303}{19.2} log \frac{20}{2.50}[/tex]
k = 0.108 hr⁻¹
The half-life time of radioisotope can be calculated from the below mentioned formula:
[tex]t_{\frac{1}{2}} =\frac{0.693}{k}[/tex]
[tex]t_{\frac{1}{2}} =\frac{0.693}{0.108}[/tex]
[tex]t_{\frac{1}{2}} =6.41 hrs[/tex]
Therefore, the half-life period of the given sample of the radioisotope will be to 6.41 hours.
Learn more about the half-life period, here:
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Question 3 What is a characteristic of consumers?
Answers
Psychographic characteristics of consumers include interests, activities, opinions, values and attitudes.A company may better understand consumer opinions and attitudes after conducting a focus group, and can use that information to tailor advertising or marketing campaigns.
Explanation:
Pls help asap which property of water is the most direct cause within the ? ) Water is a versatile solvent Water is a polar molecule Water a high heat capacity Water has a high surface tension
Answers
Answer:
A.
Explanation:
What is the relationship between DNA, a gene, and a chromosome?
A. A chromosome contains hundreds of genes, which are composed of DNA
B. A chromosome contains hundreds of genes, which are composed of protein
C. A gene contains hundreds of chromosomes, which are composed of protein
D. A gene contains hundreds of chromosomes, which are composed of DNA
Answers
Answer:
A
Explanation:
The correct option is (a). Chromosomes are long thread-like structures present in the nucleus of a cell which contains hereditary information of the cell (genes). Genes are the part of a chromosome and made up of DNA.
Answer:
A
Explanation:
chromosomes contain genes and Gene's are made of dna.
Renewable Energy is the best solution to Coal, Petroleum, Nat Gas, and Nuclear
True or false
Answers
Explanation:
coal , petroleum,Net Gas , Nuclear are the non renewable source of energy .
so
False is the answer of your question
What should be done with a used needle??
Answers
Answer:
It should be disposed of because its dirty and no one wants a disease from it if it goes into you somehow
Explanation: