Y chromosome

The Y chromosome is the sex-determining chromosome in most mammals, including humans. In mammals, it contains the gene SRY, which triggers testis development, thus determining sex. The human Y chromosome is composed of about 60 million base pairs. Most mammals have one pair of sex chromosomes in each cell (though for example the platypus has five pairs). Males have one Y chromosome and one X chromosome, while females have two X chromosomes. In mammals, the Y chromosome contains the gene that triggers embryonic development as a male. This gene is SRY. Other genes (in addition to SRY) on the Y chromosomes of men and other mammals are needed for normal sperm production. Health Insurance 24861-lotriminultra 24862-mentax 24863-mentax-tc 24864-femstat 24865-femstat3 24866-gynazole-1 24867-femstat 24868-butorphanoltartrate 24869-butorphanoltartrate 24870-butorphanoltartrate 24871-butorphanoltartrate 24872-butorphanoltartrate 24873-butorphanoltartrate 24874-butorphanoltartrate 24875-butorphanoltartrate 24876-butorphanoltartrate 24877-butorphanoltartratepreservativefree 24878-butorphanoltartratepreservativefree 24879-butorphanoltartratepreservativefree 24880-butorphanoltartratepreservativefree 24881-butorphanoltartratepreservativefree 24882-butorphanoltartratepreservativefree 24883-butorphanoltartratepreservativefree 24884-butorphanoltartratepreservativefree 24885-butorphanoltartratepreservativefree 24886-butorphanoltartratepreservativefree 24887-stadol 24888-stadolpreservativefree 24889-stadolpreservativefree 24890-butorphanoltartrate 24891-butorphanoltartrate 24892-butorphanoltartrate 24893-stadol 24894-jevtanakit 24895-cabergoline 24896-cabergoline 24897-cabergoline 24898-cabergoline 24899-dostinex 24900-cafcit 24901-caffeinecitrate 24902-caffeinecitrate 24903-caffeinecitrate 24904-caffeinecitrate 24905-cafcit 24906-caffeinecitrate 24907-caffeinecitrate 24908-caffeinecitrate 24909-caffeinecitrate 24910-cafergot 24911-migergot 24912-cafergot 24913-cafergot