II.in [美 ɪn, 英 ɪn]副in often appears as the second element of certain verb structures in English (close in, hand in, stand in, etc). For translations, see the relevant verb entry (close, hand, stand, etc).
Environmental cues, including dietary components, present in the in utero environment can induce significant changes in the expression of the genome through epigenetic modifications.
While transgenerational epigenetic inheritance could have occurred, the findings could also be explained by in utero modifications due to famine, rather than germline inheritance.
There are other biological factors that are associated with hypersexuality such as premenstrual changes, and the exposure to virilising hormones in childhood or in utero.
Since then, review studies have found that overall rates of congenital malformations in infants exposed to lamotrigine "in utero" are relatively low (1-4%).