Do identical twins hit puberty at the same time?

Likely, but not necessarily. There are numerous environmental factors which may contribute to puberty coming earlier or later than one's genes would suggest. read more

However, for twins reared together, with no extreme anomalies, such as chemotherapy, affecting only one of them, they have a great likelihood of entering puberty at about the same time. Probably, in the case of girls, they will not experience their menarche on the very same day, but within a month of each other is quite normal. read more

This all seems to suggest that there are environmental triggers for the onset of puberty, but that the response to those triggers is strongly genetic. This doesn't mean twins in the same environment will hit puberty at exactly the same time, but as the above studies indicated, relatively close to each other. read more

Best Answer: No , they wil start puberty at different times . Most likely one will be more advanced then the other at some thing . read more