What is the genotype of the female guinea pig? - ProProfs Discuss
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What is the genotype of the female guinea pig?
Assume that brown eyes (B) are dominant over tan eyes (b) in guinea pigs. When a brown-eyed male is mated with a tan-eyed female, 50% of the litter has brown eyes and 50% has tan eyes.



A. BB
B. Bb
C. Bt
D. Bb

This question is part of End of Course Biology Test Prep
Asked by Jtwelch, Last updated: May 22, 2018

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3 Answers

John Adney

John Adney

Answered on Apr 24, 2017

It would be homozygous recessive, but your answer choices doesn't have it.
 Reply

John Adney

John Adney

Answered on Dec 05, 2016

That is not an example of homozygous recessive... most likely a typo supposed to represent "bb"
 Reply

John Smith

John Smith

Answered on Dec 06, 2016

Bb

It might appear that you need to do a test cross to solve this problem, but the problem tells us the femaile guinea pig has tan eyes which is the recessive trait. The only way for her to express the recessive trait is to be homozygous recessive for eye color. Therefore, letter D would the correct choice.
 Reply

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