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. 2009 Sep 11;4(9):e6976. doi: 10.1371/journal.pone.0006976

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Kenchington et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Numbering was overlaid on the original photos to indicate how many sperm mitochondria were visible. In the “aggregate” pattern sperm mitochondria form an aggregate and stay in the same blastomere. In the “dispersed” pattern sperm mitochondria disperse randomly in the two blastomeres. A and B: Eggs from 98B (a male biased mother), sperm from 00WM2. C and D: Eggs from X102E (a female biased mother), sperm from Z101C. 2N: diploid, 3N: triploid.