The critical determinant of the sex of a male child is the
A. X-chromosome in the zygote.
B. Y-chromosome in the zygote.
C. Cytoplasm of germ cell.
D. Environmental factor.
Answer:B
The critical determinant of the sex of a male child is the
A. X-chromosome in the zygote. B. Y-chromosome in the zygote. C. Cytoplasm of germ cell. D. Environmental factor.