Klinefelter's syndrome is developed when the chromosome in male is




D. All of these

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  1. Base substitutions from base analogues I are called
  2. The first person to induce mutations was
  3.  A chemical mutagen is
  4. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  5. Albinism in com plants is best described as
  6. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  7. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  8. When two genes are situated very close to each other in a chromosome
  9. Which one of the following chemical characteristics is not common to all living beings ?
  10. The best method to determine whether an individual is homozygous or heterozygous is
  11. DNA duplication occurs in
  12. Reverse transcription was discovered by
  13. When is the sex of an offspring decided
  14. The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
  15. The scientists who rediscovered the Mendel's laws are
  16. Lethal genes are those which
  17. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  18. Diakinesis is characterised by
  19. The term 'meiosis' was coined bv
  20. Which disease results from the genetic inability to synthesize a single enzyme ?
  21. Among the following which is a test cross?
  22. The nuclear membrane completely disappears during
  23. Chromosomes exhibit minimum coiling during
  24. Mutations which are not dominant are not lost by a gene pooL This is known as
  25. Exhibition of superiority by a hybrid over both of its parents is called
  26. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  27.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  28. A codon is a sequence of 3 nucleolides on
  29. The science dealing with study of inheritance and variation is
  30. The number of characters investigated by Mendel was