Sex-Linked Inheritance Problem Set

Problem 8: Tracing the inheritance of the human Y chromosome

Women have sex chromosomes of XX, and men have sex chromosomes of XY.

Which of a man's grandparents could not be the source of any of the genes on his Y-chromosome?

A. Father's Mother.

B. Mother's Father.

C. Father's Father.

D. Mother's Mother, Mother's Father, and Father's Mother.

E. Mother's Mother.

The Biology Project
University of Arizona
Updated: July 15, 1999
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