Meiosis Video 2025

What is the primary purpose of meiosis?

• To produce identical body cells for growth and repair.

• To create genetically diverse gametes (sperm and egg cells).

• To replace worn-out cells in the body.

• To duplicate DNA before cell division.

How many chromosomes are typically found in human sperm and egg cells (gametes)?

• 46

• 92

• 23

• 12

Which of the following processes occurs during interphase, before meiosis begins?

• Crossing over between homologous chromosomes.

• Reduction of chromosome number by half.

• Cell growth, DNA replication, and general cell functions.

• Formation of four genetically identical daughter cells.

What significant event occurs during Prophase I of meiosis that contributes to genetic variation?

• Sister chromatids separate.

• Homologous chromosomes line up in a single file.

• Crossing over, where homologous chromosomes exchange genetic material.

• The cell divides into two identical daughter cells.

How do chromosomes align differently in Metaphase I compared to Metaphase II of meiosis?

• In Metaphase I, chromosomes align randomly; in Metaphase II, they align in homologous pairs.

• In Metaphase I, homologous chromosomes align in pairs; in Metaphase II, individual chromosomes align in a single file.

• In Metaphase I, individual chromosomes align in a single file; in Metaphase II, homologous chromosomes align in pairs.

• Chromosomes align identically in both Metaphase I and Metaphase II.

Nondisjunction is when chromosomes stick together

• True

• False