The condition in which only one allele of a pair is present is known as

A. Homozygous

B. Heterozygous

C. Hemizygous

D. Incomplete dominance

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  1.  A chemical mutagen is
  2. Reverse transcription was discovered by
  3. The chromosomal theroy of heredity implies that
  4. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  5. The best method to determine whether an individual is homozygous or heterozygous is
  6. The number of characters investigated by Mendel was
  7. The condition in which only one allele of a pair is present is known as
  8. Albinism in com plants is best described as
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  12. The term 'meiosis' was coined bv
  13. Diakinesis is characterised by
  14. Which one of the following chemical characteristics is not common to all living beings ?
  15. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  16. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  17. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  18. The segment of DNA which participates in crossing over is known as
  19. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  20. The first person to induce mutations was
  21. Mutations which are not dominant are not lost by a gene pooL This is known as
  22. The science dealing with study of inheritance and variation is
  23. Linkage is
  24. Dyad is
  25. The nuclear membrane completely disappears during
  26. When is the sex of an offspring decided
  27. If an individual does not breed true for its characters, it is called
  28. How many meiosis will be required to produce 102 pollen-grains ?
  29. In a monohybrid cross the Fi ratio of a backcross is
  30. Crossing over in meiosis occurs in