What determines sex?

Answer 1

Sex, as in gender, is determined by the sex organs possessed by an individual. Genetic errors and mutations can make it difficult to determine by just this, but more sophisticated methods exist.

Answer 2

The presence or absence of a y chromosome determines the sex of an individual. If a child had received a y chromosome from the father it is a boy, if it has received an x chromosome from its father is a girl. A child always receives an x chromosome from its mother, thus it is always the fathers contribution that determines the sex.

Answer 3

X and Y chromosomes. The male sperm are all either X or Y. The female egg is completely X.

If the sperm enters the egg and you have an XX baby it's a girl, and if you have an XY baby it's a boy.

Answer 4

Sex is determined by the combination of sex chromosomes inherited from biological parents. Typically, individuals with XX chromosomes are female and individuals with XY chromosomes are male, though there can be variations. Hormones released during development also play a role in the physical and biological characteristics associated with sex.

Answer 5

The male chromosome will be the determining factor of the sex of an individual, specifically the Y chromosome.

Answer 6

The number of X and Y chromosomes.