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What is the X in X-mas?
one of a pair of twins who develop from a single fertilized ovum and therefore have the same genotype, are of the same sex, and usually resemble each other closely.
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for
For example, compare
correlations on a trait with fraternal twin correlations.
Their findings: an
's behavior could help predict that of his or her sibling, but not so with fraternal pairs.
For example, when one genetically
is autistic, the other is usually not autistic.
Relativity dictates that when he comes back, he is younger than his
So the first one is
studies done with humans that were separated at birth.
females of average intelligence and energy level ethic raised in the same household.
Unless you've got an
, we're all genetically different.
had virus populations that didn't resemble those of their sibling-or anybody else, for that matter.
The only cure is a transplant of blood stem cells from a close relative or preferably an
sisters are brought up separately, differently.
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