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. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  2. Colour blindness is caused due to
  3. The science dealing with study of inheritance and variation is
  4. Among the following which is a test cross?
  5. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  6. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  7. In humans, an example of sex-linked trait is
  8. Linked genes may be separated by the process of
  9. When is the sex of an offspring decided
  10. The nuclear membrane completely disappears during
  11. The condition in which only one allele of a pair is present is known as
  12. Mutations which are not dominant are not lost by a gene pooL This is known as
  13. The number of characters investigated by Mendel was
  14. Base substitutions from base analogues I are called
  15. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  16. The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
  17. How many meiosis will be required to produce 102 pollen-grains ?
  18. The first person to induce mutations was
  19. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  20. Chromosomes exhibit minimum coiling during
  21. The best method to determine whether an individual is homozygous or heterozygous is
  22. The segment of DNA which participates in crossing over is known as
  23. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  24. Dyad is
  25.  A chemical mutagen is
  26. A codon is a sequence of 3 nucleolides on
  27. Reverse transcription was discovered by
  28. In a monohybrid cross the Fi ratio of a backcross is
  29. Down's syndrome is an example of
  30. DNA duplication occurs in