Biology
Gaurav and Garima are the children of Mr. and Mrs. Pandey. The children are fraternal twins.
Which of the following options explains the appropriate features of these twins ?
P: Fraternal twins are produced from one zygote which splits after the morula stage and produces two children at the same time.
Q: Fraternal twins must have two opposite sexes, i.e. one boy and one girl.
R: These twins are biologically diorular or dizygotlic.
S: Two eggs are released from ovaries at a time and both get fertilized.
- P and Q
- Q and R
- R and S
- S and P
Reproductive System
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Answer
R and S
Reason — Fraternal twins are dizygotic twins formed from two separate ova, each fertilised by a different sperm cell.
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