The Gene That Codes for Characteristic X Has Two Alleles

question 50

Multiple Choice

The gene that codes for characteristic X has two alleles. Allele D is dominant, and allele r is recessive. If the father is homozygous for trait X with allele r and the mother is heterozygous for trait X, the chance that one of their offspring will exhibit form r for trait X is _____.

• A) 0%
• B) 25%
• C) 50%
• D) 75%

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