which phenomenon is responsible for the described situation ?
A. Mutation
B. Pleiotropy
C. Genetic drift
D. Polygenic inheritance

A. Mutation occurs as a result of error in DNA copying.
B. Pleiotropy is caused when many phenotypes are affected by a single genotype.
C. Genetic drift occurs as a founder effect. Genetic drift refers to the fact that variations in gene frequencies within populations can occur by chance rather than by natural selection.
D. Polygenic inheritance means the inheritance of character controlled by more than two genes.

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