21. The type of mutants which have been most useful for dissecting the steps in the process of DNA replication, are the ones known as
22. Which of the following will form a new species?
23. The phenomenon of a single major gene influencing more than one character is known as
24. The phenomena in which one gene controls two or more different characters simultaneously is called
25. According to the dispersive method of DNA replication,
26. Match List-I (Biogeographical regions) with List-II (Locations) and select the correct answer:
List-I
List-II
a. Nearctic
1. Central South of America
b. Palearctic
2. Asia, south of Himalayas
c. Neotropical
3. North America down to the Mexican Plateau
d. Oriental
4. Asia North of the Himalayas, Europe and Africa, North of Sahara Desert
| List-I | List-II |
| a. Nearctic | 1. Central South of America |
| b. Palearctic | 2. Asia, south of Himalayas |
| c. Neotropical | 3. North America down to the Mexican Plateau |
| d. Oriental | 4. Asia North of the Himalayas, Europe and Africa, North of Sahara Desert |
27. Number of chromosome in a normal human body cell is
28. Chromosomal abbreviation is commonly found in the
29. Consider the following statements regarding satellite DNA and choose the correct answer:
1. Satellite or Repetitive DNA consists of short identical genes which are repeated in tandem several hundred or thousand times
2. Such DNA is found in the region of the chromosome adjacent to the centromere
3. It is easy to separate repetitive DNA by ultracentrifugation
1. Satellite or Repetitive DNA consists of short identical genes which are repeated in tandem several hundred or thousand times
2. Such DNA is found in the region of the chromosome adjacent to the centromere
3. It is easy to separate repetitive DNA by ultracentrifugation
30. In prokaryotes, multiple ribosomes (polysomes) participate in
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