When Ann the neighbor is talking about the conjoined twins, she says one was a girl and the other was a boy. Conjoined twins are formed from the same egg, so is generally understood that both twins should be of the same gender. However if the egg is fertilized by a male sperm but during cell division only the X chromosome is duplicated it could result in monozygotic twins of different sexes . This results in one normal male (XY) and one female with Turner syndrome.
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05/03/2025 alle ore 08:45