The Genotypes and Phenotypes That Result from a Cross of AA

question 80

Multiple Choice

The genotypes and phenotypes that result from a cross of AA and Aa (A = normal pigmentation and a = albinism) are

• A) phenotypes - all normal; genotypes - 50% homozygous dominant and 50% heterozygous.
• B) phenotypes - 50% normal and 50% albino; genotypes - all heterozygous.
• C) phenotypes - 75% norma and 25% albino; genotypes - 75% heterozygous and 25% homozygous.
• D) phenotypes - all albino; genotypes - 50% heterozygous and 50% homozygous recessive.

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