Mastering bio ch 13

A diploid organism whose somatic (nonsex) cells each contain 32 chromosomes produces gametes containing _____ chromosomes.

16

Normal human gametes carry _____ chromosomes.

23

Which statement correctly describes how cellular DNA content and ploidy levels change during meiosis I and meiosis II?

DNA content is halved in both meiosis I and meiosis II. Ploidy level changes from diploid to haploid in meiosis I, and remains haploid in meiosis II.

Homologous chromosomes migrate to opposite poles during _____.

anaphase I

During _____ sister chromatids separate.

anaphase II

Meiosis II typically produces _____ cells, each of which is _____.

four ... haploid

Human gametes are produced by _____.

meiosis

During _____ chromosomes align single file along the equator of a haploid cell.

metaphase II

Synapsis occurs during _____.

prophase I

During _____ a spindle forms in a haploid cell.

prophase II

At the end of _____ and cytokinesis, haploid cells contain chromosomes that each consist of two sister chromatids.

telophase I

At the end of _____ and cytokinesis there are four haploid cells.

telophase II

Meiosis I produces _____ cells, each of which is _____.

two ... haploid