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. The term 'meiosis' was coined bv
  2. The first person to induce mutations was
  3. Colour blindness is caused due to
  4. Which one of the following chemical characteristics is not common to all living beings ?
  5. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  6.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  7. Linkage is
  8. In a monohybrid cross the Fi ratio of a backcross is
  9. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  10. Lethal genes are those which
  11. A codon is a sequence of 3 nucleolides on
  12. The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
  13. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  14. Transfer of a gene or genes through a virus is called
  15. Exhibition of superiority by a hybrid over both of its parents is called
  16. Base substitutions from base analogues I are called
  17. The science dealing with study of inheritance and variation is
  18. Reverse transcription was discovered by
  19. The condition in which only one allele of a pair is present is known as
  20. Klinefelter's syndrome is developed when the chromosome in male is
  21. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  22. How many meiosis will be required to produce 102 pollen-grains ?
  23. Chromosomes exhibit minimum coiling during
  24. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  25. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  26. DNA duplication occurs in
  27. Diakinesis is characterised by
  28. Among the following which is a test cross?
  29. Albinism in com plants is best described as
  30. Dyad is