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Complete the following using the binomial expansion equation. Two heterozygous individuals (Aa) both have unattached earlobes (dominant). If they have 6 children, what is the probability that any 4 of those children will have attached earlobes (recessive)? (20pts)
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Answer #1

Aa X Aa

Parents heterozygous for unattached earlobes (dominant)

A a
A AA Aa
a Aa aa

the possibility of having recessive (aa) attached earlobes is only 1/4 or 25%/

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