Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary in nature. Suppose T stands for dominant gene and t for recessive gene, the genetic make up of a person who cannot taste is


B. Tt

C. tt

D. None of these

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  1. The best method to determine whether an individual is homozygous or heterozygous is
  2. Dyad is
  3. Klinefelter's syndrome is developed when the chromosome in male is
  4. Down's syndrome is an example of
  5. The number of characters investigated by Mendel was
  6. Linkage is
  7. Crossing over in meiosis occurs in
  8. Mutations which are not dominant are not lost by a gene pooL This is known as
  9. The term 'meiosis' was coined bv
  10. Reverse transcription was discovered by
  11. The segment of DNA which participates in crossing over is known as
  12. Among the following which is a test cross?
  13. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  14. If an individual does not breed true for its characters, it is called
  15.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  16. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  17. Diakinesis is characterised by
  18. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  19. The first person to induce mutations was
  20. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  21. Which one of the following chemical characteristics is not common to all living beings ?
  22. In a monohybrid cross the Fi ratio of a backcross is
  23. The genetic constitution of an organism is known as
  24. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  25. Exhibition of superiority by a hybrid over both of its parents is called
  26. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  27. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  28. When is the sex of an offspring decided
  29. Albinism in com plants is best described as
  30. Which disease results from the genetic inability to synthesize a single enzyme ?