If a twin brother and sister had a baby would it look the same as them?

Question

If a twin brother and sister had a baby would it look the same as them?

Answer 1

No, they can not be same but the babies are not cousins, they are brothers and sisters...

Answer 2

No. See, the twins where there is one boy and one girl are fraternal twins. Fraternal twins are not identical... they aren't any more alike than a brother and a sister born 10 years apart from each other.

And, even if two identical twins WERE able to have a child together, it wouldn't look exactly like them, because of recombination. See, when s*x cells form (sperm and egg), the chromosomes pair off, and then they break apart and the pieces recombine. So, say 'A' is one chromosome strand, and 'B' is one chromosome strand. They would break apart and link to each other so it would look like this:

AAAAAAAAAAAAAAAAAAAA

BBBBBBBBBBBBBBBBBBBB

AAAAAAAAAAAAA   AAAAAAAA

BBBBBBBBBBBBB   BBBBBBBB

AAAAAAAAAAAAABBBBBBBB

BBBBBBBBBBBBBAAAAAAAA

See? Now the chromosomes are different. So, between two people, ALL the chromosomes would get mixed up over and over again, to the point where certain traits would be displayed that were hidden in the individual, and the child would look completely different.

Answer 3

No. It is not possible.

These are far more complex than you can imagine.

It depends on both genetical and environmental changes.

Answer 4

As they are male and female twins they would not be identical, just a male and a female. The baby would only look like either one of them of have elements or both I would think.

Answer 5

Well, that is a really weird question but if they did then it would be all up to probability. Genes from both sides would affect the outcome, but you can say that the baby would look *like* them.