Among the following which is a test cross?

A. TtxTt


C. TTxTt

D. Ttxtt

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  1. When is the sex of an offspring decided
  2. Crossing over in meiosis occurs in
  3. Down's syndrome is an example of
  4. Dyad is
  5. Among the following which is a test cross?
  6. The term 'meiosis' was coined bv
  7. Mutations which are not dominant are not lost by a gene pooL This is known as
  8. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  9. Base substitutions from base analogues I are called
  10. The best method to determine whether an individual is homozygous or heterozygous is
  11. Diakinesis is characterised by
  12. When two genes are situated very close to each other in a chromosome
  13.  A chemical mutagen is
  14. Linkage is
  15. Lethal genes are those which
  16. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  17. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  18. A codon is a sequence of 3 nucleolides on
  19. Linked genes may be separated by the process of
  20. The number of characters investigated by Mendel was
  21. Chromosomes exhibit minimum coiling during
  22. Klinefelter's syndrome is developed when the chromosome in male is
  23. Which disease results from the genetic inability to synthesize a single enzyme ?
  24. The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
  25. Colour blindness is caused due to
  26. Which one of the following chemical characteristics is not common to all living beings ?
  27. The condition in which only one allele of a pair is present is known as
  28. DNA duplication occurs in
  29. The science dealing with study of inheritance and variation is
  30. A colour-blind man marries the daughter of a colour-blind person. In their progeny