Answer:
chromosomes, the X and the Y.
Explanation:
Egg cells all contain an X chromosome, while sperm cells contain an X or Y chromosome. This arrangement means that it is the male that determines the sex of the offspring when fertilization occurs.
Answer:
x & Y chromosomes determine their sex
Explanation:
XX = Female
XY = Male
The way sex is determined is by the sperm cell, which may contain eithr X or Y chromosomes while the ovaries/eggs are always X
