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प्रश्न
Define the following:
Sex chromosomes
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उत्तर
Sex chromosomes - The chromosomes which determine the sex of an individual are called sex chromosomes.
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संबंधित प्रश्न
What are the chromosomes XY and XX known as?
Fill in the following blank with suitable word :
Genes always work in ................ .
If a normal human cell has 46 chromosomes, how many chromosomes will be there in a human (i) sperm cell, and (ii) zygote?
Give Reason:
Why X-linked recessive diseases are more common among males than females.
Distinguish between heterogametic and homogametic sex determination systems.
What is male heterogamety?
A man with blood group A marries a woman having blood group O. What will be the blood group of the child?
In humans, males are heterogametic and females are homogametic. Explain. Are there any examples where males are homogametic and females heterogametic?
What is sex determination? Explain the mechanism of sex determination in the case of birds.
How is the sex of a newborn individual determined in different species of animals? Give three examples to support your answer.
