Londra and Sondra Are Identical Twins

Londra and Sondra are identical twins.However, people seldom get the two sisters mixed up because Londra is 2 inches shorter than Sondra.The difference in height means that:

A) even though both sisters display the same phenotype, they have different underlying genotypes
B) even though both sisters share the same underlying genotype, they display different phenotypes
C) because the sisters display different phenotypes, they must also have different underlying genotypes
D) Londra inherited her "height" genes from her mother while Sondra inherited her "height" genes from her father

Correct Answer:

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