Health
‘Poisonous’ sperm may offer clues to a common medical problem – Inverse
A gene variation may give some “selfish” sperm an advantage to swim faster — and even “poison” others — a new study in mice suggests.

The father of genetics
, Gregor Mendel, presumed all sperm have an equal opportunity in the race for fertilization. In a marathon sprint to the egg, so his theory goes, all sperm have the same chance to reach their target before any other sperm.
But Mendel underestimated his subject. Not all sperm are equal in the United States, male fertility problems account for a third of conception issues, but despite the prevalence, many of these issues are unexplained. In a new study in mice, researchers…
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