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 A chemical mutagen is

A. X-rays

B. UV-rays

C. β-rays

D. 5-Bromo-Uracil

You can do it
  1. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  2. The science dealing with study of inheritance and variation is
  3. Crossing over in meiosis occurs in
  4. Chromosomes exhibit minimum coiling during
  5. Base substitutions from base analogues I are called
  6. In humans, an example of sex-linked trait is
  7. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  8. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  9. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  10. Which disease results from the genetic inability to synthesize a single enzyme ?
  11. The condition in which only one allele of a pair is present is known as
  12. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  13. Diakinesis is characterised by
  14. Linkage is
  15. Exhibition of superiority by a hybrid over both of its parents is called
  16. The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
  17. How many meiosis will be required to produce 102 pollen-grains ?
  18. Dyad is
  19. The genetic constitution of an organism is known as
  20. The first person to induce mutations was
  21. Among the following which is a test cross?
  22. Lethal genes are those which
  23. Which one of the following chemical characteristics is not common to all living beings ?
  24. Albinism in com plants is best described as
  25. Mutations which are not dominant are not lost by a gene pooL This is known as
  26. Klinefelter's syndrome is developed when the chromosome in male is
  27. The scientists who rediscovered the Mendel's laws are
  28. Down's syndrome is an example of
  29. The term 'meiosis' was coined bv
  30. The nuclear membrane completely disappears during