The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by

A. fission

B. budding

C. asexual means

D. sexual means

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  1. If an individual does not breed true for its characters, it is called
  2. The best method to determine whether an individual is homozygous or heterozygous is
  3. When two genes are situated very close to each other in a chromosome
  4. Which one of the following chemical characteristics is not common to all living beings ?
  5. Among the following which is a test cross?
  6.  A chemical mutagen is
  7. The segment of DNA which participates in crossing over is known as
  8. Linked genes may be separated by the process of
  9. Dyad is
  10. The genetic constitution of an organism is known as
  11. In a monohybrid cross the Fi ratio of a backcross is
  12. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  13. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  14. Diakinesis is characterised by
  15. Chromosomes exhibit minimum coiling during
  16. Lethal genes are those which
  17. Transfer of a gene or genes through a virus is called
  18. The scientists who rediscovered the Mendel's laws are
  19. Crossing over in meiosis occurs in
  20.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  21. The science dealing with study of inheritance and variation is
  22. Albinism in com plants is best described as
  23. When is the sex of an offspring decided
  24. Mutations which are not dominant are not lost by a gene pooL This is known as
  25. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  26. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  27. The first person to induce mutations was
  28. How many meiosis will be required to produce 102 pollen-grains ?
  29. Down's syndrome is an example of
  30. A codon is a sequence of 3 nucleolides on