One Parent Carries a Dominant Allele (A^L)that Is Lethal in Early

question 63

Multiple Choice

One parent carries a dominant allele (A^L) that is lethal in early life in homozygotes.The other parent is homozygous for the wild type allele (A⁺) of the same gene.What is the expected dominant:wild type phenotype ratio for their offspring?

• A)100:0
• B)75:25
• C)50:50
• D)25:75
• E)0:100

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