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In Drosophila, the sex is determined by...

In Drosophila, the sex is determined by

A

The ratio of number of X-chromosome to the sets of autosomes

B

X and Y chromosomes

C

The ratio of X-chromosomes to the pairs of autosomes

D

Whether the egg is fertilized or develops parthenogenetically

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A
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AAKASH INSTITUTE ENGLISH-PRINCIPLES OF INHERITANCE AND VARIATION-Assignment (SECTION-C) Previous Years Questions
  1. Which one of the following traits of Garden Pea studied by Mendel was ...

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  2. Pattern baldness, moustaches and beard in human males are example of

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  3. In Drosophila, the sex is determined by

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  4. One of the parents of a cross has mutation in mitochondria. In that cr...

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  5. Lack of independent assortment of two genes A and B in fruit fly Droso...

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  6. What kind of evidence suggested that man is more closely related with ...

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  7. The recessive genes located on X-chromosome in humans are always

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  8. A male human is heterozygous for autosomal genes A and B and is also h...

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  9. A self-fertilizing trihybrid plant forms :-

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  10. There are three genes a, b, c, percentage of crossing over between a a...

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  11. The linkage map of X-chromosome of fruit fly has 66 units, with yellow...

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  12. In a plant, red fruit (R ) is dominant over yellow fruit (r ) and tall...

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  13. A normal visioned woman, whose father is colour bline, marries a norma...

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  14. Hugo de Vries gave his mutation theory on organic evolution while work...

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  15. Triticale the first man made cereal crop has been obtained by crossing...

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  16. Out of A-T,G-C pairing bases of DNA may exist in alternate valency sta...

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  17. The most striking example of point mutation is found in a disease call...

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  18. Identify the one, which causes gene mutation

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  19. mutations are mainly responsible for controlling :

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  20. Which of the following is the main category of mutation?

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