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Identical sex chromosomes could be key to a long life

When 109-year-old Jessie Gallan was asked about the secret to her long life, she replied “staying away from men.” Other ...
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Podcast: Sneaky sheep, substandard stallions and sperm wars

Stories of sneaky sheep, substandard racing stallions, and news from the front lines of the sperm wars ...
chromosomes

Podcast: That weird time in history when humans had 24 pairs of chromosomes

Everyone knows that humans have 23 pairs of chromosomes. But if you'd looked at a textbook in the 1940s, the ...