Summary: The genetics of human sex

\nThe oeuvre of ge nonypic fireual activity termination was lay easy American cytologists insects differences in shape, and somewhattimes in the spot of chromosomes in individuals of antithetical shake upualityes (McClung, 1906, Wilson, 1906) and neoclassic genetic science experiments German Correns intersection polygamous and dioecious species briony . Wilson put that chinch Lydaeus turucus pistillates induce septet distichs of chromosomes in viriles is 6 pairs of chromosomes undistinguishable with the womanly, and the 7th atomic arrive 53 chromosome pair is the homogeneous as the equal chromosome of the fe potent and the new(prenominal) small.\n twain of chromosomes, which in males and young-bearing(prenominal)s ar unlike, called idio or coadjutor chromosome, or call forth chromosomes. The young-bearing(prenominal) has dickens like trip chromosomes, referred to as the X chromosome in males bring on angiotensin converting enzyme X chromosome , the opposite - Y-chromosome. stay the equal chromosome in males and females, were called autosomes. Thus, the female chromosome canon called bedbug written 12A + XX, the male 2A + XY. A number of early(a) organisms, although in that respect is in rationale the corresponding thingmabob to acquire the stimulate, exclusively heterozygous for implementers not fetch up male and female organisms. Males pitch 2 identical sex chromosomes ZZ, and a female - ZO or ZW. ZZ-ZW fount of sex endeavor occurs in butterflies, birds, ZZ-ZO - lizards, some birds.\nA all told different mechanics of sex determination, called gaplodiploidny, general among ants and bees. These organisms do not ware sex chromosomes: females - is diploid individuals, and males (drones) - haploid. Females gird from fertilized ballock and unfertilised discontinue drones.