Because genes do not account for every trait or characteristic. Some characteristics are influenced by environment.
Identical twins, due to the fact that the one fertilized egg splits, have identical DNA. Fraternal twins, since they are from separate eggs, have different DNA.
Because the mother identical twins each have a different husband . . . half of his characteristics show up in their babies.
Fingerprints are different in identical twins.
Identical offspring are referred to as "monozygotic twins" or simply "identical twins." They arise from a single fertilized egg that splits into two embryos, resulting in genetically identical individuals. This contrasts with "dizygotic twins," or fraternal twins, which develop from two separate eggs fertilized by two different sperm. Identical twins share the same genetic material, while fraternal twins do not.
Identical twins come from a single fertilized egg that splits into two embryos, while fraternal twins come from two separate eggs fertilized by two different sperm. Identical twins share 100% of their DNA, making them genetically identical, while fraternal twins share about 50% of their DNA, like regular siblings.
Identical twins, due to the fact that the one fertilized egg splits, have identical DNA. Fraternal twins, since they are from separate eggs, have different DNA.
I dont think there is such a thing as paternal twins...perhaps you are thinking of fraternal twins. In that case, they are not identical twins, they do not look the same and they can be different sexes.
The reason why some twins are identical and some are not starts in utero. Identical twins occur when one egg is fertilized and it splits to create two embryos. Nonidentical twins come from different fertilized eggs.
Because the mother identical twins each have a different husband . . . half of his characteristics show up in their babies.
Yes EVERYBODY has different DNA even if you are identical twins.
No, fraternal twins do.
fraternal twins have two different chromosomes
Paternal Non-Identical fraternal twins
Identical twins are the result of a single fertilized embryo splitting in two at an early stage and forming two viable embryos. As such, identical twins have identical DNA. Fraternal twins are the result of two distinct fertilized embryos being viable. As such, they have different DNA. They could even be different sexes.
Fingerprints are different in identical twins.
Twins who are of the opposite sex or do not look alike are fraternal twins ~ not identical. This means that at the time of their conception ~ two eggs were fertilised. In the case od identical twins, one egg is fertilised and split in half.
That isn't possible: if the twins are from two different eggs, fertilized by different sperm, then they will not be identical. It's genetically impossible.