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 science dealing with study of inheritance and variation is
  2. Reverse transcription was discovered by
  3. Diakinesis is characterised by
  4.  A chemical mutagen is
  5. Colour blindness is caused due to
  6. When is the sex of an offspring decided
  7. Which disease results from the genetic inability to synthesize a single enzyme ?
  8. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  9.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  10. Albinism in com plants is best described as
  11. The chromosomal theroy of heredity implies that
  12. Which one of the following chemical characteristics is not common to all living beings ?
  13. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  14. A codon is a sequence of 3 nucleolides on
  15. When two genes are situated very close to each other in a chromosome
  16. Dyad is
  17. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  18. The scientists who rediscovered the Mendel's laws are
  19. Among the following which is a test cross?
  20. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  21. The segment of DNA which participates in crossing over is known as
  22. Crossing over in meiosis occurs in
  23. In humans, an example of sex-linked trait is
  24. Linkage is
  25. The first person to induce mutations was
  26. DNA duplication occurs in
  27. Klinefelter's syndrome is developed when the chromosome in male is
  28. The number of characters investigated by Mendel was
  29. Transfer of a gene or genes through a virus is called
  30. In a monohybrid cross the Fi ratio of a backcross is