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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. The nuclear membrane completely disappears during
  2. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  3. The scientists who rediscovered the Mendel's laws are
  4. Linkage is
  5. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  6. A codon is a sequence of 3 nucleolides on
  7. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  8. The number of characters investigated by Mendel was
  9. Linked genes may be separated by the process of
  10. When is the sex of an offspring decided
  11. DNA duplication occurs in
  12. Base substitutions from base analogues I are called
  13. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  14. The condition in which only one allele of a pair is present is known as
  15. Klinefelter's syndrome is developed when the chromosome in male is
  16. In a monohybrid cross the Fi ratio of a backcross is
  17. Exhibition of superiority by a hybrid over both of its parents is called
  18. Diakinesis is characterised by
  19. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  20. The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
  21. The science dealing with study of inheritance and variation is
  22. Albinism in com plants is best described as
  23. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  24. Reverse transcription was discovered by
  25. The term 'meiosis' was coined bv
  26. When two genes are situated very close to each other in a chromosome
  27. Lethal genes are those which
  28. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  29. The genetic constitution of an organism is known as
  30. The chromosomal theroy of heredity implies that