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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. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  2. Base substitutions from base analogues I are called
  3. The nuclear membrane completely disappears during
  4. The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
  5. The term 'meiosis' was coined bv
  6. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  7. The condition in which only one allele of a pair is present is known as
  8. A codon is a sequence of 3 nucleolides on
  9. The number of characters investigated by Mendel was
  10. Colour blindness is caused due to
  11. Crossing over in meiosis occurs in
  12. Linked genes may be separated by the process of
  13. Lethal genes are those which
  14. The science dealing with study of inheritance and variation is
  15. Reverse transcription was discovered by
  16. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  17. Which one of the following chemical characteristics is not common to all living beings ?
  18. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  19. In humans, an example of sex-linked trait is
  20. Diakinesis is characterised by
  21. The chromosomal theroy of heredity implies that
  22. When two genes are situated very close to each other in a chromosome
  23. Dyad is
  24. DNA duplication occurs in
  25. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  26. When is the sex of an offspring decided
  27. The first person to induce mutations was
  28. Linkage is
  29. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  30.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…