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प्रश्न
Does the sex of the child depend on the father or it is just a matter of chance? Discuss.
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उत्तर
The sex of the child depends on the father. The egg contains only one X chromosome, but half of the sperm contain an X chromosome whereas the other half contains a Y chromosome. It is simply a matter of chance as to which category of sperm fuses with the ovum and this determines whether the child will be male or female.
If the egg fuses with X-bearing sperm, the resulting combination is XX and the resulting child is female. If the egg fuses with Y-bearing sperm, the resulting combination is XY and the resulting child is male.
संबंधित प्रश्न
Answer the following questions related to sex determination in human beings:
i. What is sex chromosome?
ii. How many pairs of chromosomes are present in human beings?
iii. How is the sex of the human offspring determined?
iv. Draw a diagram depicting sex determination in man.
There are two sets of chromosomes in the zygote.
In a human, how many chromosmes are present in an egg which has just been produced by the ovary?
What is parthenogenesis?
Identify the organism in which ZZ-ZW type of sex determination is observed.
Which of the following organisms has haploid number of chromosomes?
In XO type of sex determination ______.
In human males all the chromosomes are paired perfectly except one. This/these unpaired chromosomes is/are ______.
- large chromosome
- small chromosome
- Y-chromosome
- X-chromosome
The two versions of a trait (character) which are brought in by the male and female gametes are situated on
A zygote which has Y chromosome inherited from the father will develop into a ______.
