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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. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  2. Exhibition of superiority by a hybrid over both of its parents is called
  3.  A chemical mutagen is
  4. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  5. Dyad is
  6. The condition in which only one allele of a pair is present is known as
  7. The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
  8. Reverse transcription was discovered by
  9. Lethal genes are those which
  10. In a monohybrid cross the Fi ratio of a backcross is
  11. The genetic constitution of an organism is known as
  12. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  13. Transfer of a gene or genes through a virus is called
  14.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  15. Mutations which are not dominant are not lost by a gene pooL This is known as
  16. Among the following which is a test cross?
  17. If an individual does not breed true for its characters, it is called
  18. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  19. Klinefelter's syndrome is developed when the chromosome in male is
  20. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  21. Albinism in com plants is best described as
  22. Linked genes may be separated by the process of
  23. The number of characters investigated by Mendel was
  24. A codon is a sequence of 3 nucleolides on
  25. Colour blindness is caused due to
  26. The scientists who rediscovered the Mendel's laws are
  27. How many meiosis will be required to produce 102 pollen-grains ?
  28. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  29. The term 'meiosis' was coined bv
  30. A functional unit of a gene which specifies synthesis of one poly-peptide is known as