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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
Which of the following is an example of ZW – ZZ type of mechanism of sex determination?
The number of pair(s) of sex chromosomes in the zygote of humans is :
(a) one
(b) two
(c) three
(d) four
A zygote which has inherited an X chromosome from the father will develop into :
(a) baby boy
(b) baby girl
(c) adult
(d) either boy or girl
Choose the correct answer :
Human sex chromosomes are __________
How is sex determined in human beings?
Diploid larvae which get royal jelly as food develops into ____________ and other develops into workers (sterile females).
Which of the following organisms has haploid number of chromosomes?
A man with blood group A marries a woman having blood group O. What will be the blood group of the child?
Fill the blank circles in figure and identify the sex of child A and B.
