In panmictic populations, when females (XX) can freely choose the male partner (XY) for reproduction from the whole population, the Y chromosome accumulates defects and eventually the only information it brings is a male sex determination. As a result of shrinking Y chromosome the male genomes ...
(1968), Y chromosome (1991), and sex-determining region Y (SRY) gene (1996) [2]. A female athlete, when suspected to be male, could have been classified as either male or female depending on the previous methodology applied. For example, an individual with androgen insensitivity syndrome,...
Two women indicated that they did not know the type of their intersex condition or their sex chromosome pattern; one of these women was a patient, and the other was from the peer support group. Clinical interventions Most of women (62 out of 66) were taking hormone therapy. Of the four ...
There just are not enough cases of the most feared genetic diseases to account for more than a tiny bit of the longevity gap between men and women. And some researchers pin the blame directly on the male" y" chromosome. The answer may rather be hormones. Before age 40, when virtually al...
The phenotype of an unbalanced translocation is characterized by the dosage effects of the affected genes in the translocated chromosome. We present the ca... M Ishibashi,T Watanabe,H Kyozuka,... - 《Fukushima Journal of Medical Science》 被引量: 0发表: 2021年 Evaluation of the genetic basis...
In 2 of them the chromosome complement was uniformly 45,X with no evidence of mosaicism. In another 2, however, 45,X/47,XXX mosaicism was acertained although the majority of cells were of the 45,X variety. In the fifth patient 45,X/46,XX mosaicism was detected, with the proportion of...
Thesingle"x"theoryhasproblems,though.Therejustaren'tenoughcasesofthemostfearedgeneticdiseasestoaccountformorethanatinybitofthelongevitygapbetweenmenandwomen.Andsomeresearcherspintheblamedirectlyonthemale"y"chromosome. Theanswermayratherbehormones.Beforeage40,whenvirtuallyallwomenarestillproducingestrogen,heartdisease...
Women with CAIS are born with an XY chromosome pair. Because of the Y chromosome, the women have testes that remain hidden within their groins but they lack neural receptors for androgens so they cannot respond to the androgens that their testes produce. They can, however, respond to the ...
UCLA scientists have discovered one reason why autoimmune diseases are more prevalent in women than in men. While males inherit their mother's X chromosome and father's Y chromosome, females inherit X chromosomes from both parents. New research, which sh
Natural Selection for Genetic Variants in Sport: The Role of Y Chromosome Genes in Elite Female Athletes with 46,XY DSD At present, it is widely assumed that hyperandrogenism in female athletes confers an unfair competitive advantage. This view is perpetuated in current regu... MA Ferguson-...