Advertisements
Advertisements
प्रश्न
What do you mean by identical and fraternal twins?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Answer the following question.
Explain the steps of parturition.
Explain the process of parturition.
Identify the INCORRECT match.
In human female, during which state of parturition does amnion and chorion rupture?
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 |
Which of the following hormone levels will cause release of ovum (ovulation) from the Graafian follicle?
Read the explanation given below and name the structure:
A cell formed by the fusion of gametes.
Write one sentence using the following term pertaining to reproduction in humans.
After-birth
Name these:
3 membranous, protective layers around the foetus.
Distinguish between the following pair:
Implantation and gestation
