Among the following which is a test cross?

A. TtxTt


C. TTxTt

D. Ttxtt

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  1. Among the following which is a test cross?
  2. The number of characters investigated by Mendel was
  3. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  4.  A chemical mutagen is
  5. Which disease results from the genetic inability to synthesize a single enzyme ?
  6. Base substitutions from base analogues I are called
  7. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  8. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  9. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  10. The genetic constitution of an organism is known as
  11. When is the sex of an offspring decided
  12. Exhibition of superiority by a hybrid over both of its parents is called
  13. Dyad is
  14. Chromosomes exhibit minimum coiling during
  15. The first person to induce mutations was
  16.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  17. In humans, an example of sex-linked trait is
  18. Albinism in com plants is best described as
  19. Klinefelter's syndrome is developed when the chromosome in male is
  20. Which one of the following chemical characteristics is not common to all living beings ?
  21. How many meiosis will be required to produce 102 pollen-grains ?
  22. When two genes are situated very close to each other in a chromosome
  23. Reverse transcription was discovered by
  24. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  25. If an individual does not breed true for its characters, it is called
  26. Crossing over in meiosis occurs in
  27. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  28. The chromosomal theroy of heredity implies that
  29. The condition in which only one allele of a pair is present is known as
  30. The term 'meiosis' was coined bv