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Is the Y chromosome an accurate indicator of a persons external sex? Paragraph explanation would be appreciated. :)
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Is the Y chromosome an accurate indicator of a persons external sex? Paragraph explanation would be appreciated. :)

User Lama
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If by external sex, meaning gender, then yes, because X and X makes a female because that is the female genes but X and Y is the male gene so adding the Y would change the external sex.
User Dmitry Ionash
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