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. Reverse transcription was discovered by
  2. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  3. The scientists who rediscovered the Mendel's laws are
  4. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  5. Linked genes may be separated by the process of
  6. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  7. The condition in which only one allele of a pair is present is known as
  8. Transfer of a gene or genes through a virus is called
  9. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  10. The number of characters investigated by Mendel was
  11. The genetic constitution of an organism is known as
  12. Down's syndrome is an example of
  13. Klinefelter's syndrome is developed when the chromosome in male is
  14. DNA duplication occurs in
  15. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  16. Colour blindness is caused due to
  17. When is the sex of an offspring decided
  18. The first person to induce mutations was
  19. Albinism in com plants is best described as
  20. A codon is a sequence of 3 nucleolides on
  21. The science dealing with study of inheritance and variation is
  22. Lethal genes are those which
  23. Crossing over in meiosis occurs in
  24. How many meiosis will be required to produce 102 pollen-grains ?
  25.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  26. In a monohybrid cross the Fi ratio of a backcross is
  27. Among the following which is a test cross?
  28. Exhibition of superiority by a hybrid over both of its parents is called
  29. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  30. Diakinesis is characterised by