1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
wolverine [178]
3 years ago
5

The inhabitants of the planet Mendel have three alleles for hair color: red (R), white (W) and blue (b). The R and W alleles exh

ibit codominance, and individuals with an RW genotype have pink hair. The b allele is recessive, so only individuals with a bb genotype have blue hair. If a red-haired Mendelian mates with a white-haired Mendelian, what are all the possible hair color phenotypes their offspring might theoretically have
Biology
2 answers:
Alex_Xolod [135]3 years ago
5 0

Answer:

4 RW pink hair color

Explanation:

Let the allele for red hair color = R

Let the allele for white hair color = W

Let the allele for blue hair color = b

Since R and W exhibit co dominance it means none of both traits have the tendency or capability to masked the other .

As such individual with RW genotype = PInk hair color

Allele b is recessive and only individuals with the genotype bb exhibit the blue allele  

Now; if a cross occurs between a red-haired Mendelian and a white-haired Mendelian

i.e

RR   × WW

we have

           R           R

W         RW       RW

W        RW         RW

So we have the following offspring :

4 RW = 4 pink

So theoretically , the possible phenotypes results to 4 RW pink hair color

Zielflug [23.3K]3 years ago
5 0

All of them will have pink hair,that is RW

When a homozygous red hair (RR) is crossed with a homozygous white hair (WW), all the offsprings will have pink hair(RW).

This is because self y pollination of the pink hair F1 generation offsprings produces a mixture of F2 generation offsprings bearing red(RR), pink(RW) and white (WW) in the ratio of 1:2:1.

This reappearance of the red hair and white hair offsprings in the F2 generation shows that the alleles (R) and (W) have remained unaltered in the F1 generation.

All the offsprings will have a phenotypic pink hair because the (R) and (W) are not dominant over each other.

The effect of each allele is modified by the presence of the other to produce a third phenotype (the pink hair offspring). This is known as incomplete dominance. Here, the way the alleles for hair are segregated and transmitted agrees with Mendel's proposals.

The observed phenotypic ratio of 1:2:1 in the F2 generation instead of the typical Mendelian 3:1 ratio is due to the hetero zygote showing a hair colour of its own.

Incomplete dominance is the ability of two alleles to produce a heterozygous phenotype that is different from the two homozygous phenotypes

You might be interested in
In which of the cultures was the concentration of toxins the highest?
Blizzard [7]
In American Indian so they Thad the highest concentration toxins
8 0
3 years ago
Vestigial structures, such as hip bones in whalesand appendixes in humans, are those that havelittle or no function for the orga
yaroslaw [1]

Answer:

This structure has not been highly beneficial for the organism

Explanation:

Vestigial structures are cells, tissues, and/or organs that have no apparent function. Vestigial structures are retained during the course of the evolution, but often they are degenerate and/or atrophied (due to disuse). In general, these structures are homologous to anatomical structures that play a specific role in evolutionarily related species. Some examples of vestigial structures include, among others, the presence of the appendix in humans and wings in flightless birds.

6 0
3 years ago
Neutrophils, eosinophils, and basophils are called _______ because they have prominent cytoplasmic inclusions that, in a stained
Nezavi [6.7K]

<u>Answer:</u>

Neutrophils, eosinophils, and basophils are called <u>GRANULOCYTES</u> because they have prominent cytoplasmic inclusions that, in a stained blood smear, appear with identifying, characteristic colors.

8 0
2 years ago
Help me with this biology question please
oksano4ka [1.4K]

The answer is A p is the frequency of the dominant allele. So the p squared would be the frequency of the homozygous dominant allele because homo means the same.

5 0
3 years ago
DId I put the blue boxes in the correct spots?
Vitek1552 [10]

Answer: First of all those are green boxes so i think u took a picture of the wrong slide or it was a typo. second of all, u didnt provide enough info for why and what words u are supposed to be placing blue boxes on in the first place. i guess its correct.

Explanation:

6 0
2 years ago
Read 2 more answers
Other questions:
  • You have a column made of nickel-agarose matrix. your protein must have ________ to use this column for affinity chromatography.
    7·1 answer
  • How would an inhibitor of cAMP phosphodiesterase affect glucose mobilization in muscle? It would increase cAMP levels, which wou
    12·1 answer
  • This is the general term for the various chemical products used in agriculture. It may refer to pesticides, fertilizers, manures
    15·1 answer
  • A row of 100 million atoms of a single type would be only about 1 centimeter (cm) long. What occupies most of this space?
    15·1 answer
  • The main result of photosynthesis
    12·1 answer
  • How much do landscape features on the moon change over
    8·1 answer
  • In what age did the T Rex exist
    15·2 answers
  • 2 Which part of the blood is liquid and made mostly of water?​
    5·1 answer
  • A molecular compound which dissolves in water and doesn't form ions in solution (not ionized).
    14·1 answer
  • 3. A very important organelle which is also called power house of cell is
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!