You must have heard about twin brothers or twin sisters among your friends. Find out how fertilization occurs in such cases.
Answers
Answer:
The chances of being born a twin are about 3 in 100. The chances of being born an identical twin are about 1 in 250. When more than one baby is born (twins or more), this is called a multiple (say mul-ti-pul) birth.
A few years ago more multiple births were happening because some women who were having problems getting pregnant were able to have a special treatment called fertility treatment. This sometimes led to more than one baby. Nowadays the treatment has changed so that usually only one baby is born.
Three babies together are called triplets, 4 are called quadruplets (quads), and 5 are quintuplets (quins).
Answer:
Occasionally, unusual events happen during fertilization or at an early stage of a twin pregnancy that leads to unique twins.
Mirror image twins. ...
Conjoined twins. ...
Parasitic twins. ...
Semi-identical twins. ...
Boy/girl monozygotic (identical) twins.
Explanation:
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