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.

The meaning of TWIN is either of two offspring produced in the same pregnancy. How to use twin in a sentence.

Apr 28, 2025 · Identical twins, also known as monozygotic twins, share the same egg at conception and are always either both boys or both girls. Fraternal twins, also known as …

Twin definition: either of two children or animals brought forth at a birth.. See examples of TWIN used in a sentence.

Oct 8, 2025 · Twin, either of two young who are simultaneously born from one mother. Twinning, common in many animals, is of two biological kinds: the one-egg (monozygotic), or identical, …

TWIN definition: 1. either of two children born to the same mother on the same occasion: 2. one of two very similar…. 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...

Mar 15, 2023 · Fraternal and identical are the most common types of twins. Other types include conjoined twins, half-identical twins and others.

Jul 28, 2025 · twin (third-person singular simple present twins, present participle twinning, simple past and past participle twinned) (transitive, obsolete outside Scotland) To separate, divide.

Sep 23, 2024 · Do twins run in families? Find out what you need to know about how hereditary twins are.