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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

You can do it
  1. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  2. Which disease results from the genetic inability to synthesize a single enzyme ?
  3. A codon is a sequence of 3 nucleolides on
  4. If an individual does not breed true for its characters, it is called
  5. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  6. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  7. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  8. Which one of the following chemical characteristics is not common to all living beings ?
  9. Down's syndrome is an example of
  10.  A chemical mutagen is
  11. Klinefelter's syndrome is developed when the chromosome in male is
  12. When two genes are situated very close to each other in a chromosome
  13. How many meiosis will be required to produce 102 pollen-grains ?
  14. Colour blindness is caused due to
  15. Linked genes may be separated by the process of
  16. The best method to determine whether an individual is homozygous or heterozygous is
  17. Lethal genes are those which
  18. Albinism in com plants is best described as
  19. The term 'meiosis' was coined bv
  20. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  21. When is the sex of an offspring decided
  22. Base substitutions from base analogues I are called
  23. The nuclear membrane completely disappears during
  24. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  25. In humans, an example of sex-linked trait is
  26. Linkage is
  27. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  28. In a monohybrid cross the Fi ratio of a backcross is
  29. Crossing over in meiosis occurs in
  30.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…