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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.
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संबंधित प्रश्न
What are the chromosomes XY and XX known as?
Which of the following combinations of sex chromosomes produce a male child : XX or XY?
In a human, how many chromosmes are present in a sperm in the testes?
Does genetic combination of mother play a significant role in determining the sex of a new born baby?
A couple with a newborn baby is troubled that the child does not resemble either of them. Suspecting that a mixup occurred at the hospital, they check the blood type of the infant. It is type O. Because the father is type A and the mother type B, they conclude that a mixup has definitely occurred. Are they correct? Give reason for your answer.
Choose the correct answer:
A single recessive trait, able to express must be on _________
Identify the organism in which ZZ-ZW type of sex determination is observed.
The maleness of a child is determined by ______
The chromosomal constitution of a human female can be written as ______
What is sex determination? Explain the mechanism of sex determination in the case of birds.
