Off­spring di­ver­sity

Down to Earth - - SCIENCE -

WHEN FRUIT flies are at­tacked by par­a­sites or bac­te­ria, they re­spond by pro­duc­ing off­spring with greater ge­netic vari­abil­ity. This ex­tra ge­netic vari­abil­ity may give the off­spring an in­creased chance of sur­vival when faced with the same pathogens. Th­ese find­ings demon­strate that par­ents can pur­pose­fully al­ter the geno­types of their off­spring. Science, Au­gust 14

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