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The number of sets of twins the researches studied would be dependant on the tests they were performing. Generally, researchers will gather between 5 and 10 sets of twins for research.
273 sets
2
If there are two twins, the answer is 2 If there are two sets of twins the aswer is 4
1000
I know of two pairs of twins in the bible Jacob and Esau, and Thomas and his twin.
There are many preschools good for sets of twins to attend together. The best type of preschool would be group care to start.
two in a set four in two sets
2245!! honestly
Yes, I have two sets of twins, and one set of triplets.
I don't know exactly how many were killed in the Holocaust, but about 1,500 sets of twins (3,000 individuals) were experimented on in the hands of Josef Mengele. I estimated that somewhere between 50 and 200 sets survived.
Yes, there is 4 sets of identical twins in every 1000 births.