What makes us male or female? What happens when our biological gender is out of sync with our gender identity? What about people who are born with gender ambiguity? How often in our day-to-day lives does maleness or femaleness have functional significance? Do labels really matter? When, if at all, is it important to make a distinction between sexes and genders?

I have always found these questions fascinating. So, in order to get some clarity on the subject of gender biology and sexual identity, I spoke with Dr. Anne Fausto-Sterling, a leading expert in the field. Watch the video above and/or click on the link below to read more. And don't forget to weigh in by leaving a comment at the bottom of the page. Talk nerdy to me!

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