gregor mendel proved that genes are located on chromosomes.
gregor mendel proved that genes are located on chromosomes.
who proved that genes are located on chromosomes?
gregor mendel
Na
Na
48,xxyy syndrome is a condition related to the x and y chromosomes (the sex chromosomes). people normally have 46 chromosomes in each cell. two of the 46 chromosomes, known as x and y, are called sex chromosomes because they help determine whether a person will develop male or female sex characteristics. females typically have two x chromosomes (46,xx), and males have one x chromosome and one y chromosome (46,xy). 48,xxyy syndrome results from the presence of an extra copy of both sex chromosomes in each of a male's cells (48,xxyy). extra copies of genes on the x chromosome interfere with male sexual development, preventing the testes from functioning normally and reducing the levels of testosterone. many genes are found only on the x or y chromosome, but genes in areas known as the pseudoautosomal regions are present on both sex chromosomes. extra copies of genes from the pseudoautosomal regions of the extra x and y chromosome contribute to the signs and symptoms of 48,xxyy syndrome; however, the specific genes have not been identified.
xxyy syndrome