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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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microman microman
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Posts: 34
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11 years ago
If the F1 progeny are crossed, what would be the genotype and phenotype of the F2 generation?  

^^as well

I'm not really finding these answers in my book. ouch!
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wrote...
#1
11 years ago
Parents : AA (homozygous dominant)  &  aa (homozygous recessive)
.F1 :

__  A        A
a      Aa     Aa
a      Aa     Aa

=> 100% Aa

.F2 : (crossing F1 with F1)

__ A       a
A    AA     Aa
a     Aa     aa

=>  50% Aa
      25 % AA
      25% aa

This is called a test cross.It is normally used to figure out the parents genotype by observing the F2 generation's phenotype.
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