Definitions for identical twin
Random House Webster's College Dictionary
either of a pair of twins who develop from a single fertilized ovum and therefore have the same genotype, are of the same sex, and usu. resemble each other closely.
Category: Developmental Biology
Ref: Compare fraternal twin.
identical twin, monozygotic twin, monozygous twin(noun)
either of two twins developed from the same fertilized ovum (having the same genetic material)
One of two siblings produced from the splitting of a single zygote.
Origin: identical + twin
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