Crossing Over

What is the primary purpose of crossing over during prophase one?

• To exchange genetic material between homologous chromosomes

• To duplicate chromosomes

• To align chromosomes at the equator

• To split centromeres

During metaphase one, how do homologous chromosomes align?

• Independently, like in mitosis

• Randomly scattered across the cell

• Stacked vertically

• Side by side, with centromeres aligned

What happens to the centromeres during anaphase one?

• They disappear completely

• They remain intact as homologous chromosomes move to opposite poles

• They split apart to form daughter chromosomes

• They align at the equator

Why is DNA not replicated before prophase two?

• Because the cell skips interphase

• Because the chromosomes are already haploid

• Because the centromeres have split

• Because the spindle fibers are forming

What is the final result of meiosis?

• Two diploid cells

• Four haploid cells

• Four diploid cells

• Two haploid cells