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.

Nov 10, 2025 · 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 …

Dec 13, 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 dizygotic twins, come from …

May 9, 2026 · 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, type …

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

Oct 2, 2025 · Fraternal twins (dizygotic) develop from two separate eggs fertilized by two separate sperm. They each have their own placenta and amniotic sac. Identical twins (monozygotic) develop …

Apr 21, 2025 · Twins are classified based on how they originate during early development. The two major categories are monozygotic (identical) and dizygotic (fraternal) twins. Identical twins develop …

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 …

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

1. Being two or one of two offspring born at the same birth: twin sisters. 2. Being two or one of two identical or similar people, animals, or things: twin cities; a twin bed. 3. Botany Of or relating to …