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The number of characters investigated by Mendel was

A. four

B. seven

C. six

D. one

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  1. Which one of the following chemical characteristics is not common to all living beings ?
  2. Which disease results from the genetic inability to synthesize a single enzyme ?
  3. The chromosomal theroy of heredity implies that
  4. A codon is a sequence of 3 nucleolides on
  5. Among the following which is a test cross?
  6. Reverse transcription was discovered by
  7. The science dealing with study of inheritance and variation is
  8. Dyad is
  9. If an individual does not breed true for its characters, it is called
  10. The genetic constitution of an organism is known as
  11. In a monohybrid cross the Fi ratio of a backcross is
  12. The condition in which only one allele of a pair is present is known as
  13. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  14. The first person to induce mutations was
  15. Colour blindness is caused due to
  16. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  17. Albinism in com plants is best described as
  18. Klinefelter's syndrome is developed when the chromosome in male is
  19. The best method to determine whether an individual is homozygous or heterozygous is
  20. Down's syndrome is an example of
  21. When is the sex of an offspring decided
  22. How many meiosis will be required to produce 102 pollen-grains ?
  23. The segment of DNA which participates in crossing over is known as
  24. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  25. Linkage is
  26. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  27. Chromosomes exhibit minimum coiling during
  28. Linked genes may be separated by the process of
  29. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  30. A colour-blind man marries the daughter of a colour-blind person. In their progeny