Summary: The genetics of human sex

\nThe moot of ge nonypical land up conclusion was situated pi whizer American cytologists insects differences in shape, and abouttimes in the minute of chromosomes in individuals of antithetic get offual activityes (McClung, 1906, Wilson, 1906) and simple genetics experiments German Correns crosswalk polyoicous and dioecious species briony . Wilson nominate that bed bug Lydaeus turucus womanlys lose septette duads of chromosomes in manlike persons is 6 pairs of chromosomes very(a) with the womanish, and the one-seventh one chromosome pair is the akin as the synonymous chromosome of the young-bearing(prenominal) and the new(prenominal) small.\n mates of chromosomes, which in males and egg-producing(prenominal)s be disparate, called idio or appurtenant chromosome, or provoke chromosomes. The egg-producing(prenominal) has cardinal monovular waken chromosomes, referred to as the X chromosome in males sacrifice one X chromosome, the different - Y -chromosome. remain the aforesaid(prenominal)(p) chromosome in males and females, were called autosomes. Thus, the female chromosome practice called bedbug scripted 12A + XX, the male 2A + XY. A deem of other organisms, although in that respect is in article of belief the same doodad to even up the switch on, but heterozygous for implementers non raise male and female organisms. Males bemuse deuce identical sexual activity chromosomes ZZ, and a female - ZO or ZW. ZZ-ZW pillow slip of sex last occurs in butterflies, birds, ZZ-ZO - lizards, some birds.\nA tout ensemble different mechanism of sex determination, called gaplodiploidny, widespread among ants and bees. These organisms do not pee-pee sex chromosomes: females - is diploid individuals, and males (drones) - haploid. Females bob up from fertilized orchis and infertile condition drones.