AP Biology Quiz
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A diploid organism has three homologous chromosome pairs (2n = 6). A student models meiosis assuming no crossing over and normal segregation. The model shows each homologous pair aligning independently of the others at metaphase I, with either the maternal or paternal homolog facing a given pole. After meiosis II, each gamete contains one chromosome from each pair. The student compares gametes from different meioses and finds multiple distinct combinations of whole chromosomes. Which meiotic feature best explains the production of these different gamete chromosome combinations?
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