A NATO official, speaking on condition of anonymity, pointed out that after the attacks NATO sent AWACS planes to patrol American skies and deployed a third of the troops in Afghanistan for more than a decade; more than 1,000 soldiers from non-U.S. NATO allies and partners were killed there, the official pointed out.
Cells in the human body have 46 chromosomes, including 22 pairs of autosomes and one pair of sex chromosomes (XX in females, XY in males). Because there are two sets of chromosomes, one from each parent, the cells are considered diploid.
They are known as sex chromosomes. A male has one of each chromosome (XY) and females have a pair of Xâs and no Y. Getting a Y chromosome and the SRY gene region that comes with it tells the embryo to begin making a man as opposed to a woman. This means that it is the dad that determines whether a baby will be a boy or a girl.