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'extraordinarily rare' semi-identical twins were born in australia

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It all started when two sperm fertilized an egg at the exact same time. introduction

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Can identical twins be different sexes? received jan 2; accepted sep

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Sexual arousal patterns of identical twins with discordant sexual orientations are there more same-sex ss than opposite-sex os pairs among dizygotic twins?

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Metrics details abstract in several litter-bearing species, prenatal exposure of a female fetus to hormones from adjacent male fetuses can lead to later effects on various anatomical and behavioral characteristics of the female, including a related to reproduction. access options

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