Difference between “boy sperm” and “girl sperm”

Y Sperm Make Boys



There are two types of sex chromosomes: X and Y. One of each is contributed by each parent.

Males have two distinct sex chromosomes: XY. Females have two of the same kind of sex chromosome: XX.

Mother supplies only an X chromosome, while father can supply both types. If the father’s sperm is carrying a Y chromosome, the baby will be a boy. If it is carrying an X chromosome, the baby will be a girl.
Semen contains equal numbers of Y and X sperms.

Difference between “boy sperm” and “girl sperm” in a nutshell:

BOY SPERM (Y):
- smaller
- faster
- more sensitive

GIRL SPERM (X):
- bigger
- slower
- tougher


Not all sex determination systems are genetic in nature. And, some species don’t even have a sex determination system!

Did you know that there are some really interesting sex determination systems in animal kingdom?

For instance, baby alligators’ sex is determined by the temperature at which the egg was incubated. Some snails practice sex change: adults start out male, and then become female. In tropical clown fish, the dominant individual in a group becomes female - while the other ones are male!
On the other hand, earthworms and some snails are hermaphrodites.
A few species of lizard, fish, and insect are all female and reproduce by parthenogenesis.
In some bacteria, sex is determined by infection. Ok, I won’t pretend I understand all this, but it's interesting!:)

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