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An experiment in beetles shows that when parents care for their young, the population accumulates more mutations over time, but this may have benefits
Life 30 January 2023Adult burying beetles sometimes look after their offspring Andrew Newman Nature Pictures / Alamy Stock Photo
An evolution experiment involving beetles has provided the first direct evidence that caring for offspring results in the accumulation of more genetic mutations in a population.
Some of the mutations are likely to be harmful, but there is also a positive side, as having more variation may allow populations to adapt and evolve more quickly when circumstances change.
“You’re holding in a lot of deleterious stuff,” says Rahia Mashoodh at the University of Cambridge. “But also, you’re holding in potentially a lot …
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