Identical twins are called monozygotic. Fraternal twins are called dizygotic.
Non-identical twins are called fraternal or dizygotic because they develop from two separate eggs that are fertilized by two separate sperm.
If two fraternal twins have the XY sex chromosomes, they will be male.
FRATERNAL
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.
(Person that asked the question)-Once twins are born, and old enough to determine whether they are identical or fraternal, how do you know if they are identical, or just fraternal twins that look identical? I was just curious.
you have about a 1 in 60 chance of having natural fraternal twins.
Another name for fraternal twins is dizygotic twins.
identical twins are single egg twins. fraternal twins a two egg twins. fraternal
Fraternal twins .
How do fraternal twins form? Answer one egg from each ovary is fertilized.
Paternal Non-Identical fraternal twins
Fraternal twins are more popular.
There is no precise percentage of fraternal or identical twins but it is estimated that 2/3 of all twins are fraternal where as 1/3 of twins are identical.
Fraternal twins can be the same sex or opposite sexes. It doesn't matter.
Yes, fraternal twins are perfectly normal.
fraternal twins have two different chromosomes
Fraternal twins are two siblings that have the same birth day, but do not look identical.
They are twins!