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Dyad is

A. a pair of homologous chromosomes

B. a pair of non-homologous chromosomes

C. a pair of sister chromosomes

D. a pair of non-sister chromosomes

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  1. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  2. In a monohybrid cross the Fi ratio of a backcross is
  3. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  4.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  5. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  6. Diakinesis is characterised by
  7. The nuclear membrane completely disappears during
  8. Crossing over in meiosis occurs in
  9. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  10. The term 'meiosis' was coined bv
  11. The number of characters investigated by Mendel was
  12. The best method to determine whether an individual is homozygous or heterozygous is
  13. Linkage is
  14. The scientists who rediscovered the Mendel's laws are
  15. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  16. DNA duplication occurs in
  17. The chromosomal theroy of heredity implies that
  18. Lethal genes are those which
  19. Mutations which are not dominant are not lost by a gene pooL This is known as
  20. If an individual does not breed true for its characters, it is called
  21. Down's syndrome is an example of
  22. Albinism in com plants is best described as
  23. Transfer of a gene or genes through a virus is called
  24. The condition in which only one allele of a pair is present is known as
  25. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  26. Among the following which is a test cross?
  27. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  28. When is the sex of an offspring decided
  29. Klinefelter's syndrome is developed when the chromosome in male is
  30. The first person to induce mutations was