Among the following which is a test cross?

A. TtxTt


C. TTxTt

D. Ttxtt

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  1. Lethal genes are those which
  2. Klinefelter's syndrome is developed when the chromosome in male is
  3. When is the sex of an offspring decided
  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. The number of characters investigated by Mendel was
  7. The nuclear membrane completely disappears during
  8. The science dealing with study of inheritance and variation is
  9. Which one of the following chemical characteristics is not common to all living beings ?
  10. Colour blindness is caused due to
  11. The scientists who rediscovered the Mendel's laws are
  12.  A chemical mutagen is
  13. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  14. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  15. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  16. Reverse transcription was discovered by
  17. The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
  18. The genetic constitution of an organism is known as
  19. Crossing over in meiosis occurs in
  20. Linkage is
  21. Chromosomes exhibit minimum coiling during
  22. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  23. The first person to induce mutations was
  24. The best method to determine whether an individual is homozygous or heterozygous is
  25. Exhibition of superiority by a hybrid over both of its parents is called
  26. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  27. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  28. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  29. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  30. Among the following which is a test cross?