The best method to determine whether an individual is homozygous or heterozygous is

A. inbreeding

B. cross-breeding

C. back-crossing

D. self-fertilization

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  1. Down's syndrome is an example of
  2. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  3. Transfer of a gene or genes through a virus is called
  4. Crossing over in meiosis occurs in
  5.  A chemical mutagen is
  6. Linked genes may be separated by the process of
  7. How many meiosis will be required to produce 102 pollen-grains ?
  8. The number of characters investigated by Mendel was
  9. In humans, an example of sex-linked trait is
  10. Linkage is
  11. DNA duplication occurs in
  12. A codon is a sequence of 3 nucleolides on
  13. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  14. Klinefelter's syndrome is developed when the chromosome in male is
  15. If an individual does not breed true for its characters, it is called
  16. The segment of DNA which participates in crossing over is known as
  17.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  18. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  19. The nuclear membrane completely disappears during
  20. When is the sex of an offspring decided
  21. In a monohybrid cross the Fi ratio of a backcross is
  22. The best method to determine whether an individual is homozygous or heterozygous is
  23. The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
  24. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  25. The chromosomal theroy of heredity implies that
  26. Which disease results from the genetic inability to synthesize a single enzyme ?
  27. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  28. When two genes are situated very close to each other in a chromosome
  29. Reverse transcription was discovered by
  30. Dyad is