You can remember it by laughing about how stupid women were when they tried spelling women/woman as "womyn," where the Y chromosome is what makes the baby male, highlighting their ignorance of genetics in a vain effort to detach themselves from "maleness."
XY or XX?
Yes. Bonus Lesson, since females only have the X chromosome, the father's sperm decides the sex, since it can carry either an X or Y chromosome.
You can remember it by laughing about how stupid women were when they tried spelling women/woman as "womyn," where the Y chromosome is what makes the baby male, highlighting their ignorance of genetics in a vain effort to detach themselves from "maleness."