SAT® Subject Test in Biology

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Aneuploidy

SATBIO-XKKVTS

The process of human spermatogenesis produces four sperm cells. Of the four cells produced, two of them have 20 chromosomes, and two of them have 26 chromosomes.

The nondisjunction that caused the cells to have an unbalanced chromosome number probably occurred during which stage of meiosis?

A

Cytokinesis

B

Anaphase II

C

Meiosis I

D

Meiosis II

E

Interphase