miércoles, 7 de enero de 2015

TWINS

•The term twin most notably refers to two individuals (or one of two individuals) who have shared the same uterus.
~IDENTICAL TWINS: occur when one egg is fertilized by one sperm and the egg splits into two embryos. They will have the same blood type, eye color, genedar and DNA.

~FRATERNAL TWINS: ocurr when two eggs are each fertilized by a diferent sperm creating two babies. Thes twins are no more geneticaly alike than any other brither or sister they just happen to be wombmates.

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