if a set of twins (A) had babies with another set of twins (b), even if it’s at different times.. would the babies (ab) also be identical? or would they come out looking different?
In: 2
Each egg of a female twin contains an essentially random, unique combination of the female parent’s genetics. So each of the female twins’ eggs would be essentially interchangeable because they are each unique from one another but are ALL picking their genetic combos from the same single genetic parent (either of the female twins). Same goes for the speed of the male twins.
Remember, each individual egg and each individual sperm have slightly different genetic payloads than their sisters and brothers because eggs and sperm don’t contain the ENTIRE genetic code of their parent, they contain HALF of it and that half is going to be different than the halves comprising each of the others. So generic characteristics vary among the eggs in the twin females and in the sperm in the twin males, despite coming from the same genetic parents (twins). This will result in at least some differences between children because each received a different combo half from each of their parents.
That being said, lots of genes are dominant and these dominant genes are MUCH more likely to express themselves in most of the twins of the offspring and THIS will result in significant similarities between the children compared to what you would observe in children of non-twin paired parents.
Does that make sense?
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