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प्रश्न
Does the sex of the child depend on the father or it is just a matter of chance? Discuss.
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
If X chromosome is inherited from mother and Y from father, the offspring will be male.
Write the types of sex-determination mechanisms the following crosses show. Give an example of each type.
(i) Female XX with Male XO
(ii) Female ZW with Male ZZ
E is the gene for brown eye colour and an is the gene for blue eye colour. which gene is (1) recessive, and (2) dominant?
Drone of the honeybees shows haploid number of chromosomes. Illustrate.
Answer the following question:
How is sex determined in human beings? Explain with the help of a diagram.
What is parthenogenesis?
Identify the organism in which ZZ-ZW type of sex determination is observed.
In XO type of sex determination ______.
Which of the following combination of chromosome numbers represents the correct sex determination pattern in honey bees?
Name the two types of gametes produced by men.
