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Unformatted text preview: Sample Problem Assume that long fingers are inherited as a recessive trait with 80% penetrance. Two people heterozygous for long fingers mate. What is the probability that their first child will have long fingers? Sample Problem Assume that long fingers are inherited as a recessive trait with 80% penetrance. Two people heterozygous for long fingers mate. What is the probability that their first child will have long fingers? L = short fingers l = long fingers L (short) > l (long) Sample Problem Assume that long fingers are inherited as a recessive trait with 80% penetrance. Two people heterozygous for long fingers mate. What is the probability that their first child will have long fingers? L = short fingers l = long fingers L (short) > l (long) Ll X Ll short short gametes: L l L l fertilization: L l L LL Ll short short l Ll ll short long Sample Problem Assume that long fingers are inherited as a recessive trait with 80% penetrance. Two people heterozygous for long fingers mate. What is the probability that their first child will have long fingers? L = short fingers l = long fingers L (short) > l (long) Ll X Ll short short gametes: L l L l fertilization: L l L LL Ll short short l Ll ll short long P (long fingers, assuming 100% penetrance) = or 0.25 Sample Problem Assume that long fingers are inherited as a recessive trait with 80% penetrance. Two people heterozygous for long fingers...
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 Spring '10
 OTTO
 Genetics

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