This has been the best part about the course for me. I never really understood how or when it's determined if we're biologically a boy or a girl. It's interesting to know that the gonads of boys and girls are both the same in the beginning. I can now see why people have so many questions about homosexuality and heterosexuality, the gender of God and all these other sorts of things. For instance, the bible says that God created man in his image. Now, because we start off with both gonads, does that mean God has both? A lot of people would raise these questions. Also, if there isn't enough testosterone secreted between weeks 4 to 8, does that mean biological boys were supposed to be girls and visa versa? There were many other questions that could be raised because of this information, but I think it's cool to know where and when it starts biologically for boyzz and girlzz.
Prenatal Development and Birth
Monday, April 1, 2013
Week 6 of the Embryonic Stage
In week 6 of the Embryonic Stage, the brain starts to produce patterns of electrical activity. It moves in response to stimuli, and the gonads, or sex glands (ovaries in females and testes in males), develop. At first, the gonads of male and female embryos are identical. However, between the 4th and 6th weeks, genes on the Y chromosome cause the male embryo to produce the male hormone testosterone. The testosterone causes the gonads to become testes. In the absence of testosterone, the gonads develop into ovaries.
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