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Studies predict that is sex selection was widely adopted, there would be first a marked rise in male births, but then a leveling to a 50/50 distribution.

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1 is correct!

Studies predict that is sex selection was widely adopted, there would be first a marked rise in male births, but then a leveling to a 50/50 distribution.

See p. 320.

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2 is wrong. Please try again.

Studies predict that is sex selection was widely adopted, there would be first a marked rise in male births, but then a leveling to a 50/50 distribution.

See p. 320.

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