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Changes in human sex ratio »

Posted by: BernardZwick 6 months ago

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Usually, the sex ratio (numbers of boys born divided by the numbers of girls born) is slightly greater than one. In fact, world-wide about 106 boys are born for every 100 girls. This number is also reported as the male proportion of total births, or 106/206 = 0.514 = 51.4%. Several researchers, however, have reported apparent recent declines in