Why are hybrid animals sterile?

Study of crossbred butterflies sheds new light on why sexual differences in fertility follow the pattern known as Haldane’s Rule.

Anne J. Manning • harvard
Nov. 17, 2023 • ~3 min

Gene flow between butterfly species offers clue to biodiversity

An analysis of 20 butterfly genomes found evidence that many butterfly species — including distantly related species — show a surprisingly high amount of gene flow between them, Harvard researchers found.

Peter Reuell • harvard
Oct. 31, 2019 • ~6 min

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