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(i) Why is colour blindness more promine...

(i) Why is colour blindness more prominent in males than females?
(ii) Why is Drosophila used extensively for genetic studies?

A

The Y-chromosomes of males have the genes for distinguishing colours

B

Genes for characters are located on the X-chromosomes

C

The trait is dominant in males and recessive in females

D

None of these

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The correct Answer is:
B
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AAKASH INSTITUTE ENGLISH-PRINCIPLES OF INHERITANCE AND VARIATION-Assignment (SECTION-C) Previous Years Questions
  1. Which one of the following condition in humans is correctly matched wi...

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  2. The genes, which remains confined to differential region of Y-chromoso...

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  3. (i) Why is colour blindness more prominent in males than females? (i...

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  4. Albinism is a congenital disorder resulting from the lack of the enzym...

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  5. An abnormal human male phenotype involving an extra Y-chromosome (XYY)...

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  6. The phenomenon, in which an alleles of one gene suppresses the activit...

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  7. Barr body in mammals represent

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  8. Two dominant independently assorting genes react with each other. They...

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  9. A diseased man marries a normal woman.They get three daughters and fiv...

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  10. Person whose father is colourblind marries a lady whose mother is daug...

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  11. In which of the following disease , the man has an extra X-chromosome ...

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  12. H.J. Muller ws awarded Nobel Prize for

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  13. Polygenic genes show :-

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  14. Foetal sex can be determined by examining cells from the amniotic flui...

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  15. A female fruit fly heterozygous for sex linked genes is mated with nor...

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  16. Genetic identity of a human male is determined by

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  17. Different forms of a gene located at the same locus of chromosomes a...

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  18. After crossing two plants, the progenies are found to be male sterile....

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  19. Albinism is known to be due to an autosomal recessive mutation. The fi...

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  20. How many types of genetically different gametes will be produced by a ...

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