Boy or girl babies
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The process through which sex is determined is called human sexual differentiation. All eggs contain an X chromosome, while sperm can have an X or a Y chromosome. If the egg is fertilized by a sperm cell carrying an X chromosome, the resulting XX embryo will be female. However, if the sperm cell has a Y chromosome, the embryo will have male XY chromosomes. At first, all embryos look the same regardless of sex. Until week seven, they will develop the precursors of the sex organs.


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Intersex Babies: Boy or Girl and Who Decides?




Cute Baby Twins Boy Girl Images | Free Vectors, Stock Photos & PSD
Since the 17th century, scientists have noticed a slightly tilted sex ratio at birth: 51 percent of babies born are boys. So why is that? A group of biologists decided to probe further, and published their findings in a research article. Researchers from Harvard, Oxford, Fresh Pond Research Institute and Genzyme Genetic collected , embryos created in fertility clinics and an additional , from fetal screening tests. Combined with 30 million records from live births, miscarriages and abortions, the massive amount of data made this the largest investigation of its kind. There was no imbalance of male or female embryos at the time of conception.



A Boy, a Girl, and a Baby Family
Parents want children's genitals 'fixed,' but surgery is irreversible. Doctors couldn't be sure if he had a large clitoris or a small penis and were convinced he could never live a "satisfactory life" as a man. So shortly after his birth in , Bruce's external organ and testes were surgically removed and he was raised as a girl.





Home Baby Names. Choosing the perfect name for your baby may seem like a tough decision, especially with so many options floating around. Search Baby Names. Have a special name in mind or looking for some inspiration?


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