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प्रश्न
Differentiate between Identical twins and fraternal twins.
Distinguish between the following pair:
Identical and fraternal twins
उत्तर १
Identical twins are produced from one ovum i.e. one developing zygote splits and grows into two foetuses whereas fraternal twins are produced when two ova get fertilized at a time.
उत्तर २
Identical twins: Identical twins being produced from a single egg are either both boys or both girls, and for the same reason, they are very similar (identical) to each other. Yet, everything is not similar in identical twins; for example, fingerprints, birthmarks, and even handwriting are not similar.
Fraternal twins: Sometimes, two eggs are released from ovaries at a time, and both may get fertilised to produce two individuals. Such twins, produced from two eggs, are called fraternal twins. Fraternal twins may be either both boys or both girls or one boy and one girl.
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संबंधित प्रश्न
State the function of Ovary.
Given here is a section of the female reproductive system of human beings.
Name the parts labelled 1 to 4
The following diagram represents the vertical sectional view of the human female reproductive system.
Label the parts indicated by the guidelines 1 to 8.
Give the appropriate term for the following:
Monthly discharge of blood and disintegrated tissues in the human female
Differentiate between:
Prostate gland and cowper’s gland (the nature of secretion)
Name the following:
The separation of the foetus from the mother's body.
Complete the following sentences with appropriate word:
The female equivalent of the penis is the _______.
Breasts are the modified ______ glands.
Which of the following is a finger like structure and lies at the upper junction of the two labia minora above the urethral opening?
Give reason:
Uterine lining becomes thick and spongy after fertilisation.
