Which of the following would cause a genetic disease to be inherited by a human embryo?
a
Some of the father's red blood cells expel their nucleus and die after a few weeks.
b
The mother undergoes random genetic changes that lead to cancer in her uterus.
c
The mother's skin cells are exposed to ultraviolet radiation, and they develop tumors.
d
A primary spermatocyte in the father forms a sperm cell with 22 chromosomes.
d
A primary spermatocyte in the father forms a sperm cell with 22 chromosomes.