In case of blockage of oviduct in human female, ____________ is the alternative option for child birth.
A
external fertilisation
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B
cloning
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C
in vitro fertilisation
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D
pollination
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Solution
The correct option is C in vitro fertilisation ∙ Due to blockage of oviduct in women, they cannot reproduce naturally as the sperms cannot reach the egg for fertilisation. In vitro fertilisation (IVF) is an option for such women. ∙ During IVF, freshly matured egg is collected from ovaries and is fertilised by sperm under laboratory conditions and is allowed to grow for a week. Subsequently, the grown embryo is implanted to a woman's uterus for complete development and the baby is born like normal baby. ∙ Babies born through this technique are known as test-tube babies.