and sterility have been reported. Persistence of the extra Y chromosome in germ cells can impair testicular tubular development and result in low sperm counts. However, it appears that XY pairing and recombination usually occur normally in 47,XYY, the extra Y chromosome being lost during spermatoge...
A patient with generalized XY/XX/XXY sex chromosome mosaicism confirmed by chromosome studies in several different tissues, autoradiography and sex chromatin studies is presented. This mosaicism is believed to have probably resulted from a double mitotic loss of an X and a Y chromosome from an init...
Men with this syndrome have an extra X chromosome, giving rise to the XXY chromosomal pattern. This sex chromosomal aneuploidy results in a variety of phenotypes including hypogonadism, androgen deficiency and infertility (Lanfranco et al. 2004). Cognitive and behavioral dysfunctions in Klinefelter ...
I shall review the fertility aspects of the sex chromosome trisomies, XXY, XYY, and XXX, with special reference to the karyotype 45,X/47,XXX. Each has a ‘specific’ (but variable) phenotype but may be modified by mosaicism. Although the alterations in the hypothalamic–pituitary–gonadal ...
The world as we have come to know it has not changed in thousands of years. That which was seen as strange, bizarre and unusual in past eras, has come to be known as simply different, but nothing science cannot correct. In the modern world, medical wonders have become common place. Unf...
11. The relation between recombi- nation in the region proximal forked and the non-random dis- tribution of the Y-chromosome. - In preparation.PALMGREBN., 1990. Sex-chromosome segregation in inbred Dro- sophila melanogaster XXY females. I. Influence of closely related Y chromosome derivatives....
The karyotype of Zingel zingel from the Morava River (Czech Republic) was analyzed. The diploid chromosome number was 2n=48 in females and 2n=47 in males, however, one large unpaired metacentric chromosome was present in males. This proves to be the X,X1X2X2/X1X2 multiple sex chromosome...
Drosophila flies with XXY genotype are females, but human beings with such genotype are abnormal males. It shows that: View Solution Q2 In Drosophila, crossing over occurs in female but not in a male. Gene A and B are 10 map unit apart on the chromosome. A female...
Turner Syndrome and Trisomy X are two types of sex chromosome aneuploidy that occur in females as a result of too few or too many sex chromosomes. Learn about aneuploidy, Turner Syndrome, Trisomy X, and symptoms/treatment options for sex chromosome aneuploidy. Related...
XXY means there are 3 chromosomes: 2 x's and a y. So, you can't say "an XXY chromosome" or "XXY chromosomes." The Health Board, in your inbox Our latest articles, guides, and more, delivered daily. Subscribe Categories Conditions ...