AP Bio Insta-Review Topic 5.1: Meiosis

Front

What is meiosis?

Back

Meiosis is a type of cell division that reduces the chromosome number by half, resulting in four haploid cells, each genetically distinct from the parent cell.

Front

What is the difference between haploid and diploid cells?

Back

Haploid cells (1N) contain one set of chromosomes, while diploid cells (2N) contain two sets of chromosomes.

Front

At the end of which round of meiosis is the cell haploid?

Back

Meiosis I.

Front

If the parent cell is 2N, what is the ploidy of the daughter cell?

Back

1N.

Front

What goes through movements in Meiosis II?

Back

Sister chromatids.

Front

What phase of interphase does DNA replication occur?

Back

S phase.

Front

How many rounds of DNA replication occur during meiosis?

Back

1 round.

Front

What is crossing over and when does it occur?

Back

Crossing over is the exchange of genetic material between homologous chromosomes that occurs during prophase I of meiosis.

Front

What is the significance of meiosis?

Back

Meiosis is essential for sexual reproduction, as it produces gametes (sperm and eggs) and introduces genetic diversity.

Front

What are homologous chromosomes?

Back

Homologous chromosomes are pairs of chromosomes, one from each parent, that are similar in shape, size, and genetic content.