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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.
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संबंधित प्रश्न
Explain sex determination in human beings.
Differentiate between male and female heterogamety.
If a normal human cell has 46 chromosomes, how many chromosomes will be there in a human (i) sperm cell, and (ii) zygote?
Choose the correct answer:
A single recessive trait, able to express must be on _________
In which livings, female decides the sex? Give two examples.
Complete the following sentence with appropriate word:
______are the alternative forms of a gene producing different effects.
How is sex determined in human beings?
Read the following statements and select the correct option.
i. If sperm containing Y chromosome fertilizes the ovum, then diploid zygote is formed that grows into a male child.
ii. If sperm containing X chromosome fertilizes ovum, then diploid zygote is formed, that grows into a female child.
Human offspring’s sex is determined ______
Select the incorrect statement
