When multicellular organisms developed complexity beyond what could be adequately reproduced through asexual means (such as budding), the exchange of genetic information between individuals became necessary. This became known as sexual reproduction. This exchange of genetic material was facilitated by the separation of individuals of a species that practices sexual reproduction into two distinct sexes, or genders. These genders are male and female. These are the only two genders that have ever existed.
History of Gender:
When multicellular organisms developed complexity beyond what could be adequately reproduced through asexual means (such as budding), the exchange of genetic information between individuals became necessary. This became known as sexual reproduction. This exchange of genetic material was facilitated by the separation of individuals of a species that practices sexual reproduction into two distinct sexes, or genders. These genders are male and female. These are the only two genders that have ever existed.
THE END
Shortest. Class. Ever.
Boys have a penis. Girls have a vagina.
That is all.