AP Biologyeasymcq1 pt
Independent assortment occurs because
A.homolog pairs orient randomly at the metaphase I plate
B.sister chromatids pair randomly
C.DNA replicates twice
D.the spindle disassembles
Explanation
Core Concept
Each tetrad's maternal/paternal orientation is a coin flip, so n chromosome pairs give 2ⁿ gamete combinations — 2²³ ≈ 8 million in humans.
Correct Answer
Ahomolog pairs orient randomly at the metaphase I plate
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