DNA duplication occurs in

A. meiosis only

B. meiosis II and mitosis

C. mitosis only

D. meiosis I and mitosis

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  1. DNA duplication occurs in
  2. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  3. The term 'meiosis' was coined bv
  4. Down's syndrome is an example of
  5. Albinism in com plants is best described as
  6. How many meiosis will be required to produce 102 pollen-grains ?
  7. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  8. A codon is a sequence of 3 nucleolides on
  9. In humans, an example of sex-linked trait is
  10. Colour blindness is caused due to
  11. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  12. The scientists who rediscovered the Mendel's laws are
  13. The number of characters investigated by Mendel was
  14. Among the following which is a test cross?
  15. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  16. Reverse transcription was discovered by
  17. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  18. When is the sex of an offspring decided
  19. Crossing over in meiosis occurs in
  20.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  21.  A chemical mutagen is
  22. The science dealing with study of inheritance and variation is
  23. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  24. Chromosomes exhibit minimum coiling during
  25. Transfer of a gene or genes through a virus is called
  26. Diakinesis is characterised by
  27. When two genes are situated very close to each other in a chromosome
  28. In a monohybrid cross the Fi ratio of a backcross is
  29. The genetic constitution of an organism is known as
  30. The best method to determine whether an individual is homozygous or heterozygous is