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What is the difference between fraternal twins and identical twins?Can you explain with pictures?
 Fraternal twins are “dizygotic,” meaning that they developed from two different eggs fertilized by two different sperm cells, while identical twins are “monozygotic” i.e., they developed from a single fertilized egg that split. The likelihood of identical twins is the same around the world — about 3 in 1,000, while the incidence of fraternal twins varies by geography and ranges from 6 to over 20 per 1,000 deliveries.
Fraternal Twins:
 Developed from two different eggs fertilized by two different sperm cells.
Genetic code:Like any other sibling; not identical.
Gender: Usually different
Likelihood : varies by country
Blood type: May be different.
Identical twins:
Identical Twins
Develop from  the splitting of the same fertilized egg into two
Genetic code :Nearly identical
Gender: Always the same
Likelihood: Uniform around the world; about 3 in 1,000. Only one-third of all twins in the world are identical.
Blood type : Always the same.


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