'Summary: The genetics of human sex '

'\nThe study of genotypic end up finding was laid move over American cytologists insects differences in shape, and abouttimes in the number of chromosomes in individuals of different get offes (McClung, 1906, Wilson, 1906) and uncorrupted genetics experiments German Correns interbreeding polyoicous and dioecious species briony . Wilson found that bed bug Lydaeus turucus distaffs reserve heptad opposes of chromosomes in males is 6 pairs of chromosomes identical with the young-bearing(prenominal), and the ordinal one chromosome pair is the analogous as the corresponding chromosome of the female person and the some other small.\n equate of chromosomes, which in males and females be different, called idio or colleague chromosome, or energise chromosomes. The female has deuce identical call forth chromosomes, referred to as the X chromosome in males have one X chromosome, the other - Y-chromosome. remain the same chromosome in males and females, were called autosome s. Thus, the female chromosome conventionalism called bedbug compose 12A + XX, the male 2A + XY. A number of other organisms, although there is in principle the same device to pay back the hinge upon, but heterozygous for implementers not sex male and female organisms. Males have ii identical sex chromosomes ZZ, and a female - ZO or ZW. ZZ-ZW guinea pig of sex determination occurs in butterflies, birds, ZZ-ZO - lizards, some birds.\nA all in all different appliance of sex determination, called gaplodiploidny, general among ants and bees. These organisms do not have sex chromosomes: females - is diploid individuals, and males (drones) - haploid. Females part from fertilized eggs and unfertilized develop drones.'