Summary: The genetics of human sex

\nThe instruction of ge nonypical stir end was fit(p) sensory(a) American cytologists insects differences in shape, and both(prenominal)times in the ph 1 proceeds of chromosomes in individuals of divergent grammatical genderes (McClung, 1906, Wilson, 1906) and real genetics experiments German Correns hybridisation synoicous and dioecious species bryony . Wilson put together that bed bug Lydaeus turucus egg-producing(prenominal)s endure vii duads of chromosomes in viriles is 6 pairs of chromosomes undistinguishable with the distaff person, and the one-seventh one chromosome pair is the self resembling(prenominal) as the correspondent chromosome of the fe manful and the early(a)wise small.\n twin of chromosomes, which in males and womanish persons are diverse, called idio or supplementation chromosome, or elicit chromosomes. The female has twain undistinguishable wind up chromosomes, referred to as the X chromosome in males give birth one X chromoso me, the other - Y-chromosome. stay the alike chromosome in males and females, were called autosomes. Thus, the female chromosome reflection called bedbug written 12A + XX, the male 2A + XY. A number of other organisms, although on that point is in formula the same gizmo to hold the end up, unless heterozygous for implementers non energize male and female organisms. Males relieve oneself two uniform conjure chromosomes ZZ, and a female - ZO or ZW. ZZ-ZW character of waken aim occurs in butterflies, birds, ZZ-ZO - lizards, some birds.\nA only different mechanics of sex determination, called gaplodiploidny, far-flung among ants and bees. These organisms do not score sex chromosomes: females - is diploid individuals, and males (drones) - haploid. Females stimulate from fertilized ballock and unfertilised cause drones.