Ch 13 Review- Meiosis_2025

Front

What does '2n' represent in terms of cell biology?

Back

Diploid cells, which contain two complete sets of chromosomes, one from each parent.

Front

What is meiosis?

Back

A type of cell division that occurs only in reproductive structures, resulting in gametes with half the number of chromosomes.

Front

What is Klinefelter's Syndrome?

Back

A genetic condition in males characterized by the presence of an extra X chromosome (47,XXY), leading to physical and developmental challenges.

Front

What processes contribute to genetic variation during meiosis?

Back

Crossing-over, independent assortment, and random fertilization.

Front

What are somatic cells?

Back

Body cells that are not involved in reproduction; they are diploid.

Front

What is the significance of crossing-over in meiosis?

Back

It increases genetic diversity by exchanging genetic material between homologous chromosomes.

Front

Define independent assortment.

Back

The random distribution of maternal and paternal chromosomes into gametes during meiosis.

Front

What is the difference between diploid and haploid cells?

Back

Diploid cells (2n) have two sets of chromosomes, while haploid cells (n) have one set.

Front

What is the role of meiosis in sexual reproduction?

Back

Meiosis produces gametes (sperm and eggs) that combine during fertilization to form a diploid zygote.

Front

What is Down's Syndrome?

Back

A genetic disorder caused by the presence of an extra copy of chromosome 21, leading to developmental and physical challenges.