Y chromosome

chromosome for the male gender

The Y chromosome is the sex-determining chromosome in humans and most other mammals. In mammals, it contains the gene SRY, which triggers testis development, thus determining sex.
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Noun
1. the sex chromosome that is carried by men; "human males normally have one X chromosome and one Y chromosome"
(hypernym) sex chromosome

The sex chromosome found in normal males, together with an X chromosome. Once thought to be a genetic wasteland, the Y now is known to contain at least 20 genes, some of them unique to the Y including the male-determining gene and male fitness genes that are active only in the testis and are thought responsible for the formation of sperm. Other genes on the Y have counterparts on the X chromosome, are active in many body tissues and play crucial "housekeeping" roles with the cell.

CROMOSOMA Y

CROMOSOMA Y