How many meiosis will be required to produce 102 pollen-grains ?

A. 25

B. 25.6

C. 26

D. 26.5

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  1. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  2. Crossing over in meiosis occurs in
  3. Linkage is
  4. Lethal genes are those which
  5. Which one of the following chemical characteristics is not common to all living beings ?
  6. Which disease results from the genetic inability to synthesize a single enzyme ?
  7. If an individual does not breed true for its characters, it is called
  8. When two genes are situated very close to each other in a chromosome
  9. Diakinesis is characterised by
  10. The first person to induce mutations was
  11. The chromosomal theroy of heredity implies that
  12. Among the following which is a test cross?
  13.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  14. A codon is a sequence of 3 nucleolides on
  15. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  16. Down's syndrome is an example of
  17. Linked genes may be separated by the process of
  18. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  19. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  20. When is the sex of an offspring decided
  21. Dyad is
  22. Colour blindness is caused due to
  23. Base substitutions from base analogues I are called
  24. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  25. In a monohybrid cross the Fi ratio of a backcross is
  26. The condition in which only one allele of a pair is present is known as
  27. The term 'meiosis' was coined bv
  28. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  29. The segment of DNA which participates in crossing over is known as
  30. The nuclear membrane completely disappears during