contestada

In rabbits, coat color is determined by one gene with at least 4 different alleles. The table shows the phenotypes for pairings of alleles.

2. What is the order of dominance of the 4 alleles?

In rabbits coat color is determined by one gene with at least 4 different alleles The table shows the phenotypes for pairings of alleles 2 What is the order of class=

Respuesta :

adityareddykarra

Answer:

Full color is a dominant allele of C

Chinchilla has to have a recessive allel of c^ch

Himalayan must have a recessive of c^h

Albino has a recessive allele of c

Explanation:

marianaegarciaperedo

In complete dominance, one allele completely masks the expression of another allele, which is evident in heter0zyg0us individuals. The order of dominance refers to which allele dominates over which. C>>C-ch>>C-h>>c.

------------------------

When genes express complete dominance, it means that the dominant allele completely masks the expression of the recessive allele.

This is the case of individuals that are heter0zyg0us for a particular gene and express the dominant trait. The dominant allele is hiding the expression of the recessive allele.

Many genes show complete dominance.

When a gene is multiallelic, we can talk about the order of dominance.

This means that one allele hides the expression of another allele, and there is a third allele that can inhibit the first two, and so on.

For a better understanding, let us analyze the rabbits' example.

The gene that codes for coat color has four alleles.

  • C
  • C-ch
  • C-h
  • c

According to the image, we know that

⇒  Individuals that express full color have the following genotypes

  • C C,
  • C C-ch,
  • C C-h,
  • C c

We can see that the C allele is present in all these genotypes, which suggests that this is the dominant allele and hides the expression of all the other alleles.

****C dominates over C-ch, C-h, and c alleles. *****.

⇒  Individuals that express chinchilla color have the following genotypes

  • C-ch C-ch
  • C-ch C-h
  • C-ch c

As we can see, the allele C-ch is always present, meaning that it dominates over C-h and over c alleles.

*****C-ch dominates over C-h and c alleles******

⇒  Hymalayan individuals have the following genotypes

  • C-h C-h
  • C-h c

From these genotypes we can assume that C-h dominates over c allele.

⇒  Albino genotype is cc, meaning that the allele c is the recessive one.

According to this analysis, we could assume that the order of dominance is as follows,

                C   >>  C-ch   >>  C-h   >>  c

The symbol >> means that the firts allele dominates over all the following ones.

  • C dominates over  ⇒  C-ch, C-h, c
  • C-ch dominates over  ⇒  C-h, c
  • C-h dominates over ⇒  c
  • c is the recessive allele

-----------------------------------

You can learn more about the order of dominance at

https://brainly.com/question/21400608?referrer=searchResults

Otras preguntas