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.
Sex chromosomes determine whether you are male or female. An individualâs sex (i.e., whether they are a male or female) is determined by the sex chromosomes. Most people have two sex chromosomes, one that is inherited from their mother and one that is inherited from their father. Typically, females have two X chromosomes (XX) and males have one X chromosome and one Y chromosome (XY).