The girls in the photo are examples of identical twins. The term identical twins refers to a type of twinning, and describes how they form, not what they look like.
While the girls look identical, they are not clones. They have physical differences, such as their fingerprints, which may look identical, but the ridges are not spaced the same.
The scientific term for identical twins is monozygotic twins.
mono- single
zygote- fertilized egg
When the egg and sperm combine, the combination is called a zygote. If the zygote splits into two separate parts, each part develops into an individual embryo. Because the two embryos are the result of a single egg-sperm combination, they have the same genetic origins; the same DNA. Thus, identical twins are formed.
Faternal twins are the result of two eggs fertilized by two separate sperm. Generally only one egg is available for fertilization, but if two eggs are released, they each could be fertilized producing two zygote. These twins the same genetic traits as any other siblings in the family. embryo. When two eggs are fertilized, the scientific name for the twins is dizygotic twins. These twins do not have identical DNA.
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