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Dr. Dan KueblerMay 8, 2022< 1 min read

How Many Biological Sexes Are There in Human Beings? [VIDEO]



What Determines Biological Sex?

Biological sex in humans is determined by the two gametes for sexual reproduction — sperm (male) and ovum/egg (female).

Are There More Than 2 Sexes?

While there are intersex conditions in which reproductive anatomy may be ambiguous or not fully formed, none of these conditions constitutes an additional biological sex because they do not produce an additional gamete that is functional for sexual reproduction.

A Biologist's Perspective on Biological Sex

In this video Dan Kuebler offers a biologist’s perspective on what has become a controversial subject. Regardless of one’s position on the relationship between sex and gender, an understanding of what biologically constitutes male or female in humans is essential.

More biological evolution resources

Dr. Dan Kuebler

Dr. Dan Kuebler is a Professor of Biology at the Franciscan University of Steubenville. He holds a Ph.D. in Molecular and Cell Biology from UC Berkeley and is co-author of The Evolution Controversy, A Survey of Competing Theories.