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प्रश्न
Answer the following question:
How is sex determined in human beings? Explain with the help of a diagram.
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उत्तर
- In human beings, the gametes from the male parent decide the sex of the baby.
- In human beings, there are 22 pairs of autosomes and 1 pair of sex chromosomes.
- In human male gametes, two dissimilar sex chromosomes XY are present whereas in females two similar sex chromosomes XX are present.
- All children inherit 'X' chromosomes from their mother and 'X or 'Y' from their father.
- If it is X chromosome from father, then the offspring will be a daughter, and if 'Y' chromosomes, then it will be a son.
- Hence, the gametes from the male parent decide the sex of the baby.
APPEARS IN
संबंधित प्रश्न
If X chromosome is inherited from mother and Y from father, the offspring will be male.
Fill in the following blank with suitable word :
Genes always work in ................ .
Explain how, sex is determined in human babies.
In a human, how many chromosmes are present in a skin cell?
Define the following:
Sex-linked characters
Explain the mechanism of sex determination in birds.
There are five daughters and no son in a family. It is because
Diploid larvae which get royal jelly as food develops into ____________ and other develops into workers (sterile females).
Which of the following is incorrect regarding ZW - ZZ type of sex determination?
If a male grasshopper with XO genotype produces sperm, what proportion of his sperm will carry the X chromosome?
