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Yes, boys were once girls for a MINIMUM amount of time.

As you may know, when you were created, your mother and father each combined half of their genetic information (23 Chromosomes each). One pair of these chromosomes help to determine your sex (Gender). If you're a female you contain two X chromosomes (1 From mother, 1 from father). Males have 1X and 1Y chromosomes. At the moment of conception you of course was male or female based on your genes but the Y Chromosomes doesn't kick in right away, in fact the first 5-6 weeks of development are attributed to the X chromosome alone. Once the Y chromosome is activated, one of the genes in the Y chromosome known as the SRYgene has two functions, to inhibit certain features of the X Chromosome and to impose through dominant physiological traits that a male must have.

The Ovaries ascend and become the testicals and the labium fuses to become the scrotum and the male variant of the clitoris, yep it's the penis. While we're at it, this is also the reason why males have nipples. The nipples form before the activation of the Y Chromosome and the SRYgene and thus remain through development and life but you don't develop breasts!

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11y ago

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No, biologically, individuals are either born male or female based on their genetic make-up. While some individuals may identify differently from their assigned sex at birth, this would not imply that they were once the opposite sex before birth.

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9mo ago
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Q: Were boys once girls before they were born?
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