In a monohybrid cross the Fi ratio of a backcross is

A. 1:1

B. 3:1

C. 1:2:1

D. 9:3:3:3

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  1. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  2. The condition in which only one allele of a pair is present is known as
  3. Reverse transcription was discovered by
  4. The segment of DNA which participates in crossing over is known as
  5. The genetic constitution of an organism is known as
  6. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  7. Down's syndrome is an example of
  8. Crossing over in meiosis occurs in
  9. Colour blindness is caused due to
  10. Which disease results from the genetic inability to synthesize a single enzyme ?
  11. How many meiosis will be required to produce 102 pollen-grains ?
  12. Albinism in com plants is best described as
  13. The first person to induce mutations was
  14. DNA duplication occurs in
  15. Among the following which is a test cross?
  16. Chromosomes exhibit minimum coiling during
  17. Linked genes may be separated by the process of
  18. Diakinesis is characterised by
  19. The science dealing with study of inheritance and variation is
  20. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  21. In humans, an example of sex-linked trait is
  22. If an individual does not breed true for its characters, it is called
  23. When is the sex of an offspring decided
  24. Klinefelter's syndrome is developed when the chromosome in male is
  25. Exhibition of superiority by a hybrid over both of its parents is called
  26. When two genes are situated very close to each other in a chromosome
  27. The best method to determine whether an individual is homozygous or heterozygous is
  28. The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
  29. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  30. Mutations which are not dominant are not lost by a gene pooL This is known as