The meaning of twin is either of two offspring produced in the same pregnancy. How to use twin in a sentence. Either of two children born to the same mother on the same occasion:

Learn more. There are different types of twins, identical and fraternal being the most common. Identical, or monozygotic, twins develop from the same fertilized egg that splits into two. These twins are If you have a twin brother or sister, the two of you are always the same age. There are identical twins, who have the same dna, and fraternal twins, who are more like two siblings who happen to be born … Learn how twinning happens and what types of twins are out there.

If you have a twin brother or sister, the two of you are always the same age. There are identical twins, who have the same dna, and fraternal twins, who are more like two siblings who happen to be born … Learn how twinning happens and what types of twins are out there. One twin, the 'donor' twin, is small and anemic, the other, the 'recipient' twin, is large and polycythemic. The lives of both twins are endangered by this condition.