Question

In: Biology

A gene showing codominance- Select one: a. has alleles that are recessive to each other b....

A gene showing codominance-

Select one:

a. has alleles that are recessive to each other

b. has alleles expressed at the same time in development

c. has alleles tightly linked on the same chromosome

d. has one allele dominant to the other

e. has both alleles independently expressed in the heterozygote

Solutions

Expert Solution

Answer is (e).

in codominance, both the alleles of a gene express themselves in heterozygotes. as a result heterozygotes for such genes possess the phenotype produced by both the alleles of such genes.

eg. An example of codominance that occurs in humans is that of blood type.

Parents                  IAIB                     X                  IAIB              

Gametes           IA              IB                                IA         IB       

Progeny    

Gametes

IA             

IB              

IA         

IAIA             

BG : A

IAIB           

BG : AB  

IB              

IAIB              

BG : AB

IBIB

BG : B             

     BG : blood group

gladiator answered 1 year ago
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