Why We Donât Know The Size Of The Transgender Population. In 2001, Kerith Conron was working on LGBT issues in Bostonâs health department. She discovered that homeless transgender people were sleeping on benches because the shelters, which were segregated by gender, didnât know what to do with them.
Chromosome abnormalities usually occur when there is an error in cell division. There are two kinds of cell division, mitosis and meiosis. Mitosis results in two cells that are duplicates of the original cell. One cell with 46 chromosomes divides and becomes two cells with 46 chromosomes each.
Other relatively common abnormalities of autosomes include trisomy 13 (3 copies of chromosome number13 instead of the usual 2) and trisomy 18 (3 copies of chromosome number 18).Babies born with these chromosomal disorders in all the cells of their body have.