Mostly because of the chromosomes their parents contributed. They were both formed when one egg with a set of genes split and basically copied itself to form the other zygote.
This explains alike appearances and quirks, but not neccesarily personality.
Scientists use studies of identical twins because they share the same genetic makeup. By comparing identical twins with non-identical twins, researchers can separate the effects of genetics from environmental factors in order to understand how traits and characteristics are influenced by both nature and nurture. This can provide valuable insights into the role of genes in shaping human characteristics and behaviors.
Non identical twins.
Approximately 30 of twins are identical, also known as monozygotic twins.
No, identical twins do not always share a placenta. In some cases, identical twins may have separate placentas.
No they do not. Identical twins have identical DNA structure, and therefore they have very similar cell structure, leading them to have vastly similar organs (same size, health issues, etc.). However, everyone, even identical twins, do not share the exact same organs. Some identical twins get migraines, while the other doesn't. In some cases, one twin will be homosexual and the other heterosexual. In any case, by nature, identical twins do not have identical brains, and by nurture they experience different things, learn different things, and process information in different ways, resulting in the twins having differing opinions, etc. No two brains are exactly alike.
Because the mother identical twins each have a different husband . . . half of his characteristics show up in their babies.
Identical and fraternal twins typically share many similar characteristics
Scientists use studies of identical twins because they share the same genetic makeup. By comparing identical twins with non-identical twins, researchers can separate the effects of genetics from environmental factors in order to understand how traits and characteristics are influenced by both nature and nurture. This can provide valuable insights into the role of genes in shaping human characteristics and behaviors.
If they were not then they would not be called identical twins!
No.
Identical twins. Although horses sometimes have twins I'm not sure if they have identical twins.
Identical twins are formed when one fertilized eggs splits. Non-identical twins are formed when two separate eggs are fertilized.
Twins are identical because they come from the same egg.
Identical twins!
The same as when you had the first set of identical twins.
Non identical twins.
do identical or non identical twins share the same placenta