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Crossing over in meiosis occurs in

A. leptotene

B. pachytene

C. diplotene

D. diakinesis

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  1. The scientists who rediscovered the Mendel's laws are
  2. Reverse transcription was discovered by
  3. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  4. Chromosomes exhibit minimum coiling during
  5. In humans, an example of sex-linked trait is
  6. Dyad is
  7. Diakinesis is characterised by
  8. A codon is a sequence of 3 nucleolides on
  9. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  10.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  11. Linked genes may be separated by the process of
  12. Transfer of a gene or genes through a virus is called
  13. Down's syndrome is an example of
  14. The segment of DNA which participates in crossing over is known as
  15. The term 'meiosis' was coined bv
  16. When is the sex of an offspring decided
  17. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  18. Crossing over in meiosis occurs in
  19. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  20. Albinism in com plants is best described as
  21. The chromosomal theroy of heredity implies that
  22. The number of characters investigated by Mendel was
  23. The nuclear membrane completely disappears during
  24. The genetic constitution of an organism is known as
  25. Which one of the following chemical characteristics is not common to all living beings ?
  26. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  27.  A chemical mutagen is
  28. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  29. Base substitutions from base analogues I are called
  30. The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of