Meiosis Flashcards

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What type of cell division produces gametes for sexual reproduction?


What are gametes and why are they called haploid cells?

Gametes are sex cells (e.g., sperm and egg cells) that contain half the genetic material of a normal cell, hence called haploid cells.

How many gametes are produced from one cell during meiosis, and what is unique about them?

Four haploid gametes are produced, and each one is genetically different from the others.

Briefly describe the process of meiosis.

Meiosis involves two cell divisions: chromosomes duplicate and form X-shaped structures, chromosome pairs line up and get swapped, cells divide to form two cells, and then divide again to produce four genetically different haploid cells.

What happens during fertilisation?

The male and female gametes join, and their nuclei fuse to form a zygote with a complete set of chromosomes. This zygote then divides by mitosis to form an organism.

How do cells in an embryo develop after fertilisation?

Initially, all cells in the embryo are genetically identical, but as the embryo develops, these cells differentiate into specialised cells.

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