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 number of characters investigated by Mendel was
  2. Base substitutions from base analogues I are called
  3. Dyad is
  4. Klinefelter's syndrome is developed when the chromosome in male is
  5. In a monohybrid cross the Fi ratio of a backcross is
  6. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  7. Mutations which are not dominant are not lost by a gene pooL This is known as
  8. If an individual does not breed true for its characters, it is called
  9. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  10. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  11. How many meiosis will be required to produce 102 pollen-grains ?
  12. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  13. The nuclear membrane completely disappears during
  14. The chromosomal theroy of heredity implies that
  15. The best method to determine whether an individual is homozygous or heterozygous is
  16.  A chemical mutagen is
  17. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  18. When is the sex of an offspring decided
  19. Linkage is
  20. Chromosomes exhibit minimum coiling during
  21.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  22. Which disease results from the genetic inability to synthesize a single enzyme ?
  23. Diakinesis is characterised by
  24. The term 'meiosis' was coined bv
  25. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  26. Transfer of a gene or genes through a virus is called
  27. The science dealing with study of inheritance and variation is
  28. When two genes are situated very close to each other in a chromosome
  29. Colour blindness is caused due to
  30. Exhibition of superiority by a hybrid over both of its parents is called