Which feature characterizes the centriole contributed to the zygote by the sperm?
A) It is one of several nonnuclear organelles contributed by the sperm.
B) It fuses with the egg's centriole.
C) It becomes the zygote's centrosome, which organizes mitotic spindles.
D) It is destroyed once it enters the egg cytoplasm, meaning all centrioles are maternally inherited.
E) It inhibits cytoplasmic reorganization following fertilization.

Question

Quizplus · Accepted Answer

The centriole contributed by the sperm becomes the zygote's centrosome, which is responsible for organizing mitotic spindles during cell division. It does not fuse with the egg's centriole, nor is it destroyed upon entering the egg cytoplasm. While it is true that there are other nonnuclear organelles contributed by the sperm, this is not a specific feature of the centriole. Additionally, there is no evidence to suggest that the sperm's centriole inhibits cytoplasmic reorganization following fertilization.

Which Feature Characterizes the Centriole Contributed to the Zygote by the Sperm