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Q. No.Weismann's theory of germplasm rejected
1. Mutation theory
2. Darwin's theory of natural selection
3. Darwin's theory of Pangenesis
4. Neo-Darwinism
Subtopic: Darwin's Theory |
51%
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Which of the following animals show adaptive radiation based on locomotion?
1. Scorpion, elephant, human
2. Cheetah, kangaroo, mole
3. Praying mantis, seal, python
4. Cockroach, squirrel, toad
1. Scorpion, elephant, human
2. Cheetah, kangaroo, mole
3. Praying mantis, seal, python
4. Cockroach, squirrel, toad
Subtopic: Concept of Organic Evolution: Evidence |
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Genetic drift
1. Is random change in gene frequency
2. Has nothing in common with inbreeding
3. Is appearance of recessive genes
4. Produces greatest flunctuation in large populations
1. Is random change in gene frequency
2. Has nothing in common with inbreeding
3. Is appearance of recessive genes
4. Produces greatest flunctuation in large populations
Subtopic: Hardy Weinberg Law |
77%
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Gene pool of a population tends to remain stable if the population is large, without large scale mutations,
without migration and with
1. Random mating
2. Moderate environmental changes
3. Natural selection
4. No predator control
without migration and with
1. Random mating
2. Moderate environmental changes
3. Natural selection
4. No predator control
Subtopic: Hardy Weinberg Law |
69%
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Industrial melanism as found in peppered moth proves that
1. Melanic form has no selective advantages in industrial area
2. Lighter form has no selective advantage in polluted industrial area and non-polluted area
3. Melanism is pollution generated feature
4. True black melanic form developed by recurring random mutation
1. Melanic form has no selective advantages in industrial area
2. Lighter form has no selective advantage in polluted industrial area and non-polluted area
3. Melanism is pollution generated feature
4. True black melanic form developed by recurring random mutation
Subtopic: Concept of Organic Evolution: Evidence |
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Which of the following is Sewall Wright effect?
1. Gene pool
2. Genetic drift
3. Gene migration
4. Natural selection
1. Gene pool
2. Genetic drift
3. Gene migration
4. Natural selection
Subtopic: Hardy Weinberg Law |
56%
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Lederberg replica plating experiment explains that mutations are
1. Fast
2. Useful
3. Gradual change
4. Preadaptive changes
1. Fast
2. Useful
3. Gradual change
4. Preadaptive changes
Subtopic: Concept of Organic Evolution: Evidence |
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If nature selects mean character value, it is
1. Stabilising selection
2. Disruptive selection
3. Directional selection
4. Progressive selection
1. Stabilising selection
2. Disruptive selection
3. Directional selection
4. Progressive selection
Subtopic: Natural Selection |
78%
From NCERT
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According to Hardy-Weinberg principle, sum total of all the allelic frequencies is
1. Zero
2. One
3. Infinite
4. Remain changeable
1. Zero
2. One
3. Infinite
4. Remain changeable
Subtopic: Hardy Weinberg Law |
87%
From NCERT
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Hardy-Weinberg principle is applicable to
1. Small population
2. Isolated population
3. Large population
4. All of these
1. Small population
2. Isolated population
3. Large population
4. All of these
Subtopic: Hardy Weinberg Law |
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