The Mystery of Twins . By: Mirella Cabrera Psychology Per.7 Mc Elmoyl.
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The Mystery of Twins
By: Mirella Cabrera
Twins who come from two different eggs which are fertilized by two different sperm cells. Their genes are not more similar than the ones of brothers or sisters. “Since fraternal twins are from separate eggs, like brothers or sisters from single births, they share only 50% of their genes.” Fraternal twins are called dizygotic.
According to psychologist Dr. Nancy L. Segal, virtual twins are unrelated kids born within nine months between each other and enter a family, through birth or adoption.
She states, “Raised together essentially from birth, or at least since infancy, virtual twins may be genetic strangers, but they share an environment from an early point in life.”