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प्रश्न
Give Reason:
Why X-linked recessive diseases are more common among males than females.
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उत्तर
Because females have two copies of the X-Chromosome and males have only one X- chromosome.
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संबंधित प्रश्न
Answer the following questions related to sex determination in human beings:
i. What is sex chromosome?
ii. How many pairs of chromosomes are present in human beings?
iii. How is the sex of the human offspring determined?
iv. Draw a diagram depicting sex determination in man.
Explain the mechanism of sex determination in birds.
Explain the mechanism of 'sex determination' in birds. How does it differ from that of human beings?
Fill in the following blank with suitable word :
Genes always work in ................ .
How drones are produced in honey bees?
What is haplodiploidy?
From the following which option correctly represents the normal genetic constitution of a ovum?
A man with blood group A marries a woman having blood group O. What will be the blood group of the child?
Which of the following statements is not true with respect to variation?
Fill the blank circles in figure and identify the sex of child A and B.
