The Genotypes and Phenotypes That Result from a Cross of AA

question 2

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% normal and 25% albino; genotypes:75% heterozygous and 25% homozygous.
• D)phenotypes:all albino; genotypes:50% heterozygous and 50% homozygous recessive.

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