The chromosomal theroy of heredity implies that

A. chromosomes are composed of DNA and protein

B. genes are composed of chromosomes

C. organism cannot live withoutchromosomes

D. genes are located on the chromosomes and are transmitted to the next generation through them.

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  1. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  2. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  3. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  4. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  5. Base substitutions from base analogues I are called
  6. Klinefelter's syndrome is developed when the chromosome in male is
  7. The nuclear membrane completely disappears during
  8. Reverse transcription was discovered by
  9. If an individual does not breed true for its characters, it is called
  10. Among the following which is a test cross?
  11. The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
  12.  A chemical mutagen is
  13. Linked genes may be separated by the process of
  14. The first person to induce mutations was
  15. In a monohybrid cross the Fi ratio of a backcross is
  16. Chromosomes exhibit minimum coiling during
  17. The number of characters investigated by Mendel was
  18. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  19. Mutations which are not dominant are not lost by a gene pooL This is known as
  20. Which disease results from the genetic inability to synthesize a single enzyme ?
  21. Colour blindness is caused due to
  22. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  23. Down's syndrome is an example of
  24. The best method to determine whether an individual is homozygous or heterozygous is
  25. Transfer of a gene or genes through a virus is called
  26. Exhibition of superiority by a hybrid over both of its parents is called
  27. How many meiosis will be required to produce 102 pollen-grains ?
  28. Linkage is
  29. The genetic constitution of an organism is known as
  30. When is the sex of an offspring decided