Inheritance of Sex Flashcards

All 3 cards in this deck

What are the sex chromosomes of a human male and a human female?

Male XY, female XX.

What ratio of male to female offspring is predicted by a genetic diagram of XX × XY?

50 : 50 (1 : 1) — a 50% chance of each sex.

Which parent determines the sex of a human offspring, and why?

The father — his sperm carries either an X or a Y chromosome, while all eggs carry X.