Sexy Cell Division: Meiosis, the Division of the Sex Cells

Human life begins as a single cell, that grows and divides until a complex organism constructed of trillions of different cells. The process involved in the creation of sex cells, and more specifically, the process that ensures genes are varied between humans within these cells, is known as Meiosis.

Meiosis  differs from mitosis, creating haploid cells containing only half of the 46 chromosomes found in diploid cells (which are created by mitosis). This process creates genetically varied ‘quarter cells’ that require a partner to complete them, ensuring that new cell types are created,rather than replicated as they would be in mitosis.

This special type of cell division is essential in the sexual reproduction of eukaryotic organisms.

From Crash Course: Biology on YouTube by Hank Green.