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. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  2. Albinism in com plants is best described as
  3. A codon is a sequence of 3 nucleolides on
  4. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  5. Chromosomes exhibit minimum coiling during
  6. When is the sex of an offspring decided
  7. The chromosomal theroy of heredity implies that
  8. Among the following which is a test cross?
  9. The best method to determine whether an individual is homozygous or heterozygous is
  10. In humans, an example of sex-linked trait is
  11. Colour blindness is caused due to
  12. The science dealing with study of inheritance and variation is
  13. Mutations which are not dominant are not lost by a gene pooL This is known as
  14. Reverse transcription was discovered by
  15. Dyad is
  16. The scientists who rediscovered the Mendel's laws are
  17. Linked genes may be separated by the process of
  18. If an individual does not breed true for its characters, it is called
  19. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  20. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  21. Linkage is
  22. Exhibition of superiority by a hybrid over both of its parents is called
  23. The term 'meiosis' was coined bv
  24. Which one of the following chemical characteristics is not common to all living beings ?
  25. The genetic constitution of an organism is known as
  26. The number of characters investigated by Mendel was
  27. Down's syndrome is an example of
  28. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  29.  A chemical mutagen is
  30. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by