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. The term 'meiosis' was coined bv
  2. Down's syndrome is an example of
  3. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  4. The scientists who rediscovered the Mendel's laws are
  5. The segment of DNA which participates in crossing over is known as
  6. DNA duplication occurs in
  7. In humans, an example of sex-linked trait is
  8. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  9. In a monohybrid cross the Fi ratio of a backcross is
  10. When two genes are situated very close to each other in a chromosome
  11. Chromosomes exhibit minimum coiling during
  12. How many meiosis will be required to produce 102 pollen-grains ?
  13. Reverse transcription was discovered by
  14. Exhibition of superiority by a hybrid over both of its parents is called
  15. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  16. Albinism in com plants is best described as
  17. Transfer of a gene or genes through a virus is called
  18. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  19. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  20. Klinefelter's syndrome is developed when the chromosome in male is
  21. The number of characters investigated by Mendel was
  22. The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
  23. Which one of the following chemical characteristics is not common to all living beings ?
  24.  A chemical mutagen is
  25. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  26. The condition in which only one allele of a pair is present is known as
  27. Mutations which are not dominant are not lost by a gene pooL This is known as
  28. The nuclear membrane completely disappears during
  29. Among the following which is a test cross?
  30. The chromosomal theroy of heredity implies that