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Need help asap! thx

Genetics as it applies to evolution, molecular biology, and medical aspects.

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Need help asap! thx

Postby ShivamD » Wed Feb 17, 2010 8:37 pm

In humans, the condition hyperdactyly (possession of twelve fingers) is determined by one gene. When a homozygous normal woman married a man who was homozygous for the condition, all their children had hyperdactyly. If the children were to marry people with the same genotype as them, what is the probability of them having normal children?

can someone pls solve this and give me a DETAILED description! thank you.
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Postby JackBean » Thu Feb 18, 2010 7:38 am

if is woman homozygous AA and man aa their children can be only Aa (from mother they always get A and from father they always get a).
If they have children with other people with the same genotype (that is Aa), they will have children AA : Aa : aa in 1 : 2 : 1.

Cis or trans? That's what matters.
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Postby jwalin » Sat Feb 20, 2010 3:52 pm

1 normal : 3 hyperdactyly
it isn't what you do that matters but it is how you do it
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