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Guinea pigs can produce differect coat colors, white, brown, and mixed white/brown (agouti). THe allele B is codominant with allel W (white coat). Cross an agouti colored Guinea pig with a brown Guinea pig. What are the odds of the offspring; 1/2 homozygous white, 1/2 heterozygous brown; 1/4 homozygous brown, 1/2 heterozygous agouti, 1/4 white; 1/2 heterozygous brown, 1/2 homozygous agouti; 1/2 homozygous brown, 1/2 heterozygous agouti.

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marianaegarciaperedo

In codominance, two alleles can be simultaneously expressed. The correct option is D.  1/2 homozygous brown (BB), 1/2 heterozygous agouti (BW).

What is codominance?

Codominance is an inheritable pattern in which two alleles can be simultaneously expressed.

In these situations, heterozygous individuals can express two phenotypes, each of them coded by one allele.

Heterozygous individuals' phenotype is an additive expression of their parents' genes.

In the exposed example, coat color are white, brown and agouti (mixed).

  • Allele B codes for brown
  • Allele W codes for white

Genotype    Phenotype

BB                       Brown

WW                     White

BW                      Agouti

Cross: Agouti pig with brown pig

Parentals)   BW   x   BB

Gametes)  B   W       B     B

Punnett square)   B       W

                      B   BB      BW

                      B    BB     BW

F1) 50% of the progeny is expected to be homozygous BB and express brown coat color

    50% of the progeny is expected to be heterozygous BW express agouti coat color

The correct option is then option D. 1/2 homozygous brown, 1/2 heterozygous agouti.

You can learn more about codominance at

https://brainly.com/question/14053639

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