In mammals, genomes from both parents are generally needed to make viable offspring. But changing the expression of ‘imprinted’ genes can render the father's contribution dispensable.
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Loebel, D., Tam, P. Mice without a father. Nature 428, 809–811 (2004). https://doi.org/10.1038/428809a
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DOI: https://doi.org/10.1038/428809a
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