If I have children, there's a one-in-two chance that I will pass on the defective gene to them. That doesn't mean they'll look like August, but they'll carry the gene that got double-dosed in August and helped make him the way he is. If I marry someone who has the same defective gene, there's a one-in-two chance that our kids will carry the gene and look totally normal, a one-in-four chance that our kids will not carry the gene at all, and a one-in-four chance that our kids will look like August.

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