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How are male and female conjoined twins formed?

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Any conjoined twins are formed when a single egg, which would normally split into two separate embryos, doesn't completely split. Twins from one egg are referred to as “identical”. read more

Any conjoined twins are formed when a single egg, which would normally split into two separate embryos, doesn’t completely split. Twins from one egg are referred to as “identical”. Twins from two separate eggs, fertilized by two separate sperms are “fraternal”. read more

Best Answer: no, conjoined twins are always identical. Male and female twins are fraternal. You can only have identical twins that are conjoined because the conjoining happens in the early stages of pregnancy. Identical twins come from the same egg. Fraternal twins come from different eggs and can be either of the two sexes. read more

No. Conjoined twins are always identical twins, and therefore the same sex. Identical twins come from the same fertilized egg which splits in two to generate two children. With conjoined twins, the fertilized egg generates an an embryo that does not split properly, so the twins are joined. read more

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