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Of course, every parent-in-waiting hopes for a healthy baby, but most — whether they admit it or not — have a preference for one sex over the other. But to what extremes would you go to make it happen?
Call them sperm on steroids, these 6-inch (15 cm) long wriggly organisms that Australian fertility specialists have magnified more than 7000x to help determine which are most likely to fertilize that lucky egg.