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प्रश्न
What do you mean by identical and fraternal twins?
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उत्तर
Identical Twins (Produced from one egg): Sometimes a single fertilized egg may get split and separated into two parts during its early stages of cell division. Each of these two split parts then behaves like an independent egg and produces one complete individual each. These are called Identical twins.
Fraternal Twins: Sometimes, two eggs are released from ovaries at a time and both may get fertilized to produce two individuals. These are called fraternal twins.
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संबंधित प्रश्न
Uterine contraction during parturition are triggered by ____________.
Name the three stages of parturition.
State the difference between Micturition and Parturition.
Write one sentence using the following term pertaining to reproduction in humans.
Tied and cut
Name these:
3 membranous, protective layers around the foetus.
Distinguish between the following pair:
Implantation and gestation
Which hormone's rising concentration promotes stronger uterine contractions near term?
What type of feedback mechanism operates during parturition?
In what position does the baby normally exit during the expulsion stage?
During which stage of labour does the cervix become completely dilated?
