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Lab Notes: Why some mums have all boys or all girls

Lab Notes: Why some mums have all boys or all girls

If you've given birth to three daughters, what are the odds that your next child will also be a girl? One in two, right? Well … maybe not. The odds of having a fourth girl could be a fair bit higher than 50 per cent, according to a new study into families with single-sex sets of siblings.

The Science Show · Australian Broadcasting Corporation

July 22, 202514m 20s

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Show Notes

If you've given birth to three daughters, what are the odds that your next child will also be a girl?

One in two, right? Well … maybe not.

The odds of having a fourth girl could be a fair bit higher than 50 per cent, according to a new study into families with single-sex sets of siblings.

Topics

lab notesjorge chavarroharvardsex at birthsiblingsgenome wide association studyfamiliesbelinda smithscience