A Moment of Science
Did you know that there are other kinds of twins besides fraternal and identical?
Though it’s true that identical twins have the same DNA, that doesn’t mean that there’s no way to tell them apart. Learn more on this Moment of Science.
Fraternal is when two different eggs are fertilized by two separate sperm. And even though fraternal twins can look very much alike, on average they only share fifty percent of their genes, the same as any other siblings.
This is known as a genetic bottleneck, and it meant that the remaining cheetahs were forced to breed with their relatives.
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