Shane and Blane Are Identical (Monozygotic)twins; However,people Seldom Get the Two

question 182

Multiple Choice

Shane and Blane are identical (monozygotic) twins; however,people seldom get the two brothers mixed up because Blane is almost 2 inches shorter than Shane.The difference in height means that

• A) even though both brothers display the same phenotype, they have different genotypes.
• B) because the brothers display different phenotypes, they must also have different underlying genotypes.
• C) even though both brothers share the same genotype, they display different phenotypes.
• D) Blane is heterozygous for the "tallness" trait, and Shane is homozygous for the "tallness" trait.

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