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Among the following which is a test cross?

A. TtxTt

B. TTxTT

C. TTxTt

D. Ttxtt

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  1. Crossing over in meiosis occurs in
  2. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  3. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  4. In a monohybrid cross the Fi ratio of a backcross is
  5. The segment of DNA which participates in crossing over is known as
  6. When two genes are situated very close to each other in a chromosome
  7. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  8. When is the sex of an offspring decided
  9. How many meiosis will be required to produce 102 pollen-grains ?
  10. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  11. A codon is a sequence of 3 nucleolides on
  12. The genetic constitution of an organism is known as
  13. Among the following which is a test cross?
  14. Chromosomes exhibit minimum coiling during
  15. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  16. The chromosomal theroy of heredity implies that
  17. Klinefelter's syndrome is developed when the chromosome in male is
  18. The best method to determine whether an individual is homozygous or heterozygous is
  19. Mutations which are not dominant are not lost by a gene pooL This is known as
  20. Colour blindness is caused due to
  21. The number of characters investigated by Mendel was
  22. The condition in which only one allele of a pair is present is known as
  23. Exhibition of superiority by a hybrid over both of its parents is called
  24. Dyad is
  25. Base substitutions from base analogues I are called
  26.  A chemical mutagen is
  27.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  28. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  29. Transfer of a gene or genes through a virus is called
  30. The scientists who rediscovered the Mendel's laws are