Ganymede and Callisto
If two fraternal twins have the XY sex chromosomes, they will be male.
No. Not even close. Fraternal twins result from two eggs fertilized by two sperm at about the same time and being implanted in the uterus together. They are siblings.Not even identical twins, by the way, can be considered as clones, because cloning involves the removal of genetic information from one cell with its transfer to another cell. Identical twins involve splitting, not cloning.
Identical twins are called monozygotic. Fraternal twins are called dizygotic.
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.
How do fraternal twins form? Answer one egg from each ovary is fertilized.
Another name for fraternal twins is dizygotic 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.
identical twins are single egg twins. fraternal twins a two egg twins. fraternal
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!
no
Identical twins are formed from a single egg that splits into two. Fraternal twins are formed from two separate eggs that are both separately fertilized. So identical twins have identical DNA, and fraternal twins do not.