
The numbers of life and death, as it applies to the chromosomal sexes. XX:XY. A thread.

At birth, no matter where you look the numbers are pretty much the same. For every 105 boys born, there are 100 girls. Therefore XX<XY.


At about 40 years of age, the chromosomal sexes even out. 50% of people are male, and 50% are female. Therefore XX=XY.
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