Semen secrets: How a previous sexual partner can influence another male's offspring
Wednesday, October 1, 2014 - 10:20
in Psychology & Sociology
Scientists have discovered a new form of non-genetic inheritance, showing for the first time that offspring can resemble a mother's previous sexual partner -- in flies at least. Researchers manipulated the size of male flies and studied their offspring. They found that the size of the young was determined by the size of the first male the mother mated with, rather than the second male that sired the offspring.