Identical twins are formed when one fertilized egg results in two babies, who are then genetically identical. But are they really identical? The person we are is a factor of both genetics and environmental factors. Genetics can be very strong- but they aren't everything. You might expect identical twins who were raised together to be, well, identical. But even when they share everything, including their mother's womb, there are environmental differences that leave a lasting mark. Did one fetus have a larger placenta? Did one twin spend more time sick as a child? Did they eat different foods with different nutritional values? Or did either undergo a cell mutation at any point in their lives? Jaida Elcock of SciShow gives us a lot of different reasons why identical twins may not be quite identical. Knowing all this is pretty neat, but it's not going to help you tell those two apart. There's a 50-second skippable ad at 3:30. (via Laughing Squid)
Tuesday, October 08, 2024
Difference Between Identical Twins
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2 comments:
The sexual orientation of identical twins can vary as well. I've known a couple of pairs of identical twins where one was gay and one was straight.
I don't think we know what causes sexual orientation. Of course there are a lot of opinions, some quite vehemently expressed, such as "his mother babied him" or "she played with the boys too much".
Some say hormones, some say choice, but nobody has figured it all out yet. I suspect it's a combination of many influences but that's just another opinion from someone who hasn't a clue.
xoxoxoBruce
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