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 pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  2. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  3. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  4. In humans, an example of sex-linked trait is
  5. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  6. Klinefelter's syndrome is developed when the chromosome in male is
  7. Lethal genes are those which
  8. The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
  9. The nuclear membrane completely disappears during
  10. The condition in which only one allele of a pair is present is known as
  11. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  12. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  13. The segment of DNA which participates in crossing over is known as
  14. Among the following which is a test cross?
  15. The scientists who rediscovered the Mendel's laws are
  16. Transfer of a gene or genes through a virus is called
  17.  A chemical mutagen is
  18. The genetic constitution of an organism is known as
  19. Dyad is
  20. Crossing over in meiosis occurs in
  21. Albinism in com plants is best described as
  22. Down's syndrome is an example of
  23. DNA duplication occurs in
  24. Linkage is
  25. Diakinesis is characterised by
  26. When two genes are situated very close to each other in a chromosome
  27. Chromosomes exhibit minimum coiling during
  28. Linked genes may be separated by the process of
  29. Mutations which are not dominant are not lost by a gene pooL This is known as
  30. If an individual does not breed true for its characters, it is called