3.) a female guinea pig homozygous dominat fro black fur coloris mated with a ma

Question

3.) a female guinea pig homozygous dominat fro black fur coloris mated with a male homozygous for white fur. in aa liter ofeight off spring, there would probably be: a)8black guiena pigs b)4black and 4 white c)2 black 4 grey and 2 white d)8 grey guenia pigs 3.) a female guinea pig homozygous dominat fro black fur coloris mated with a male homozygous for white fur. in aa liter ofeight off spring, there would probably be: a)8black guiena pigs b)4black and 4 white c)2 black 4 grey and 2 white d)8 grey guenia pigs

Explanation / Answer

Assuming BB to be black, bb to be white, and Bb to be grey... your cross would be BB x bb. Doing a punnett square you will get 4Bb.       B B b   Bb   Bb b   Bb   Bb Therefore you will have all 8 Bb. This narrows your answers down toa) and d). Then what you have to look at is if fur color show complete orincomplete dominance. If heterozygous (Bb) shows an intermediatephenotype and is gray, then you would have 8 grays. If B is acompletely dominant allele, then 1 B is enough to make the furcolor black, so you would have 8 blacks. In this case, you wouldfind that black is completely dominant so you would get 8blacks.....answer a)

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