More specifically, how does a Sperm become X or Y sperm.
In: Biology
Sperm cells are made in the seminiferous tubules which are located in the testes. Sperm cells are made through a process called meiosis. Our cells contain 46 chromosomes in 23 pairs of 2 identical chromosomes. Reproductive cells (sperm and eggs), however, only have 1 pair of 23. In the seminiferous tubules, specialized stem cells duplicate and divide. One of these cells will then undergo meiosis, which is the process of dividing and exchanging genes, with the end result being 4 sperm cells with unique, random set of genes comprising one set of 23 chromosomes with 2 having an single X chromosome and 2 having a single Y chromosome (normally, although errors can happen that create abnormal chromosome counts.)
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