Determining a childs sex

Determining Sex: What determines a childs shake up? Usually it is the end up chromosomes in which two X chromosomes in the nucleus of its authentic junkie cell and it willing become a cissy; a Y and an X chromosome and it will become a staminate. An junky will have at least wholeness female determining X chromosome. A sperm cellatozoan cell, however, may birth either an X chromosome or a Y chromosome. If the fertilizing sperm cell contains an X chromosome, the egg will set about into a female. If it contains a Y chromosome, it will take on into a male. Nonetheless, it is assertable for an XY to become female. If the Y chromosome is missing the SRY gene, which is located unspoiled the suppress of the short branch of the chromosome, the egg will develop into a female. At three weeks of fetal development, there is no augury of gonads. By the fifth week, venereal ridges have begun to recoil near the kidneys. These ridges (gonads) will transform into eith er ovaries or testes. Until the one-seventh week, the venereal ridge is similar in both males and females. unprocessed rootage cells, which will later become either sperm or eggs cells, migrate from the embryos yolk sac to the genital ridge.

These seminal fluid cells are integrated into the primitive sex chord, which are fingerlike projections that have formed over the anterior week. Male development: Sex is last-place determined the last half of the sixth week. If the Y chromosome is drive home in the embryos cells, a gene within the short arm of the chromosome called SRY will turn on, initiating a che mical chain reaction that will turn on othe! r genes and stimulate the return of male hormones. If the X chromosome is present, or if the SRY gene is missing from the Y chromosome, If you command to get a full essay, order it on our website: OrderCustomPaper.com

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