superfecundation


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superfecundation

[¦sü·pər‚fē‚kən′dā·shən]
(physiology)
Multiple, simultaneous fertilization by a number of sperm of many eggs released at ovulation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Although the couple know the odds of having two sets of non-identical twins, they don't know the odds of it happening with superfecundation.
Few statistics demonstrate how often superfecundation - one man fertilising two eggs in separate instances of sexual intercourse - occurs.
There's a term which applies to this situation, superfecundation, which is used when more than one male fathers offspring in a single litter.