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प्रश्न
What do you mean by identical and fraternal twins?
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
ACTH is ____________.
Identify the INCORRECT match.
Column I contains terms and Column II contains definitions. Match them correctly and choose the right answer.
| Column I | Column II |
| A. Parturition | 1. Attachment of zygote to the endometrium |
| B. Gestation | 2. Release of the egg from the Graafian follicle |
| C. Ovulation | 3. Delivery of baby from the uterus |
| D. Implantation | 4. Duration between pregnancy and birth |
| E. Conception | 5. Formation of a zygote by fusion of the egg and sperm. |
| 6. Stoppage of ovulation and menstruation |
The process of expelling or pushing the baby out from mother's body is called ______.
Which of the following hormone levels will cause release of ovum (ovulation) from the Graafian follicle?
Write one sentence using the following term pertaining to reproduction in humans.
280 days
Write one sentence using the following term pertaining to reproduction in humans.
Head first
Name these:
3 membranous, protective layers around the foetus.
Distinguish between the following pair:
Implantation and gestation
Distinguish between the following pair:
Pregnancy and parturition
