A.
B.
C.
D.
参考答案:
A
本题详细解析:
Both oogenesis and spermatogenesis involve mitosis, increase in cell size (cell growth), two meiotic divisions and differentiation. Choice A is correct.
Choice B is incorrect as it includes both apoptosis (cell death) and decrease in size, which does not occur in either process. Choice C is incorrect as binary fission occurs in prokaryotic cells and the generation of a polar body only occurs in oogenesis. Choice D is incorrect as budding only occurs in fungi, and fertilization (when mature sperm and egg cells fuse) occurs after both oogenesis and spermatogenesis.
