How is the chromosome number reduced between meiosis I and meiosis II? a. crossing over c. two replications b. metaphase d. no replication

The answer is; B

During metaphase I of Meiosis I, homologous sister chromosomes line up the metaphase plate in pairs. During anaphase I, the sister chromosomes of the pairs are separated and move to opposite poles. This way, the resulting daughter cells have half the chromosome number as the parent cell.