male sex chromosome
A typical human male has an X and a Y sex chromosome pair.
xy
XY
XY
Xy chromosome
If two fraternal twins have the XY sex chromosomes, they will be male.
Males typically have one X chromosome and one Y chromosome. This combination of sex chromosomes determines male sex characteristics.
XY in pair 23
XX for a girl and XY for a boy
The male human is represented by a sex chromosome consisting of one X chromosome and one Y chromosome (XY).
Theyre female because males have XY.