Some Forms of Cleft Palate Are Caused by Recessive Alleles

question 4

Multiple Choice

Some forms of cleft palate are caused by recessive alleles of a gene on the X chromosome.In an Icelandic population,3.6 * 10^-3 of the females have this form of cleft palate.What proportion of the males would you expect to be affected,assuming Hardy-Weinberg equilibrium?

• A)1.3 *10^-5
• B)3.6 *10^-3
• C)1.6 *^-3
• D)6.0 *10^-2
• E)0

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