Asked by sophon

which of these crosses will only produce heterozygous offspring?
a. aa x aa
b. Aa x Aa
c. AA x Aa
d. Aa x aa
e. AA x aa
Answered by PsyDAG
Using the Punnett sqaure, which will give you <I>only</I> Aa (heterozygous) offspring?

http://www.google.com/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/thumb/1/17/Punnett_square_mendel_flowers.svg/550px-Punnett_square_mendel_flowers.svg.png&imgrefurl=http://commons.wikimedia.org/wiki/Image:Punnett_square_mendel_flowers.svg&h=133&w=133&sz=52&tbnid=wqd9MJU5EaAJ:&tbnh=133&tbnw=133&prev=/images%3Fq%3DPunnett%2Bsquare&sa=X&oi=image_result&resnum=1&ct=image&cd=1

I hope this helps. Thanks for asking.
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