The article discusses the complexities surrounding biological sex, emphasizing that it's not strictly binary. It outlines how biological sex is determined through a combination of chromosomal, chemical, and physical attributes that can change throughout a person's life. Advances in prenatal testing methods reflect these complexities, allowing for earlier determination of sex through blood tests. Additionally, it highlights various chromosomal variations and the role of hormones in the development of sex, suggesting that understanding biological sex requires a more nuanced view than traditionally thought.
The truth is that biological sex, like a lot of scientific categories, is nuanced, defined by multiple criteria including chromosomal, chemical, and physical factors.
When a person is pregnant, the placenta sheds DNA into the bloodstream. Labs can take samples of that blood, analyze it to look at the chromosomes.
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