General biology question ?

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

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glxvr6turbo
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General biology question ?

Post by glxvr6turbo » Wed Nov 28, 2007 3:25 am

A man in his early twenties who is normal learns that his father has developed Huntington's Disease, a rare, fatal disease caused by a dominant allele, which usually manifests itself in middle age (since the disease is rare, it is safe to assume that he is heterozygous). What is the probability that the younger man wil also develop the symptons later in life? (His mother does not carry a dominant allele.)

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mith
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Post by mith » Wed Nov 28, 2007 4:33 am

You should start by writing out the genotypes
Living one day at a time;
Enjoying one moment at a time;
Accepting hardships as the pathway to peace;
~Niebuhr

kcnq1ot1
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Re: General biology question ?

Post by kcnq1ot1 » Thu Nov 29, 2007 3:15 pm

glxvr6turbo wrote:A man in his early twenties who is normal learns that his father has developed Huntington's Disease, a rare, fatal disease caused by a dominant allele, which usually manifests itself in middle age (since the disease is rare, it is safe to assume that he is heterozygous). What is the probability that the younger man wil also develop the symptons later in life? (His mother does not carry a dominant allele.)


probability is *

Mod Edit: no point of giving answers...

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