Two offspring born at the same time who look exactly alike. Identical twins are also called monozygotic twins because they develop from the same egg: a single fertilised egg splits early in development and becomes two separate fetuses.
Twins formed from the division of a single fertilized egg into two separate fetuses
Twins that have been produced by the division of a single fertilized egg cell and who therefore have an identical genotype; also called monozygotic twins.
Twins produced by the division of a single zygote; both have identical genotypes.
the offspring resulting from a fertilized egg splitting into two separate embryos.
A pregnancy in which two children are produced from the same ovum, which has split during early embryonic development. Identical twins are always of the same sex, share the same genetic makeup and blood groups. Both children resemble each other physically, mentally and psychologically. Identical twins are also called Monozygotic twins, Enzygotic twins, true twins or uniovular twins.
Twins that originate from a single fertilized egg that then splits into two exact replicas that develop into two genetically identical individuals. See also fraternal twins.
Identical twins are formed from the division of one fertilized egg that then grows into two fetuses. They are genetically identical and will look exactly alike.
fertilization of single egg cell that subsequently divides to give two separate fetuses. They are of the same sex and otherwise genetically identical; any differences in their appearance are due to environmental influences.
Twins that arise from a single egg fertilised by a single sperm. These twins are therefore genetically identical. They are also referred to as monozygotic twins.
Twins that develop from a simple fertilized egg in a single placental sack. Such twins are the same sex and usually resemble one another closely.
Two individuals who originate from a single zygote (one egg fertilized by one sperm), which early in cell division separates to form two separate cell masses. Also called monozygotic twins.
Twins formed from a single egg. They are of the same gender and have the same genetic makeup. Also called monozygotic twins.