In understanding the problems that have arisen in attempts at human racial classification, why is it important to understand the difference between genotype and phenotype?
A. Although phenotypic characteristics may change, the genetic material of populations stays the same for a long time.
B. Attempts at human racial classification typically used phenotypic traits like skin color as markers of common ancestry, but many such traits do not reflect the existence of shared genetic material.
C. Attempts at human racial classification have typically used genotypic traits like blood type as markers of common ancestry, and these traits are passed on from generation to generation in discrete bundles.
D. The phenotypical traits used to classify humans into races go together as genetic units.
E. Phenotypical similarities and differences always have a genetic basis.
Answer: B
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