Even then, only limited numbers of spermatogonia enter meiosis at any one time, such that adult males retain a pool of actively dividing spermatogonia that acts as a stem cell population.

The dividing cell shown here is a male's sperm cell. With meiosis in a female, most of the cell's cytoplasm will be concentrated in one of the two emerging cells, which will result in one large ...

The four gametes produced in meiosis are genetically different. Independent assortment and the random nature of fertilisation lead to variation in living organisms – no two organisms are the ...