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 A person meets with an accident and great loss of blood has occurred. There is no time to analyse his blood group. It is safe to transfuse blood of

A. AB, RH+

B. AB, RH-

C. O, RH-

D. O, RH+

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  1. How many meiosis will be required to produce 102 pollen-grains ?
  2. The science dealing with study of inheritance and variation is
  3. Diakinesis is characterised by
  4. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  5. Crossing over in meiosis occurs in
  6. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  7. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  8. Which one of the following chemical characteristics is not common to all living beings ?
  9. The condition in which only one allele of a pair is present is known as
  10. The nuclear membrane completely disappears during
  11. When is the sex of an offspring decided
  12.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  13. Base substitutions from base analogues I are called
  14. Albinism in com plants is best described as
  15. Linkage is
  16. The segment of DNA which participates in crossing over is known as
  17. The chromosomal theroy of heredity implies that
  18. Among the following which is a test cross?
  19. Colour blindness is caused due to
  20. In humans, an example of sex-linked trait is
  21. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  22. Down's syndrome is an example of
  23. Chromosomes exhibit minimum coiling during
  24. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  25. DNA duplication occurs in
  26. Mutations which are not dominant are not lost by a gene pooL This is known as
  27. Dyad is
  28. When two genes are situated very close to each other in a chromosome
  29. The first person to induce mutations was
  30. A codon is a sequence of 3 nucleolides on