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Q. No.At a particular locus, the frequency of allele A is 0.8 and that of allele a is 0.2. What would be the frequency of heterozygotes in a random mating population at equilibrium?
1. 0.32
2. 0.16
3. 0.24
4. 0.48
Subtopic: Hardy Weinberg Law |
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Variations caused due to mutations are
| 1. | random and directionless |
| 2. | random and directional |
| 3. | random and small |
| 4. | random, small and directional |
Subtopic: Sources of Variation |
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Which of the following is not true?
| 1. | About 15 mya, primates called Dryopithecus and Ramapithecus were existing |
| 2. | Ramapithecus was more ape like |
| 3. | Homo erectus had a large brain around 900 cm3 |
| 4. | The brain capacities were between 650 to 800 cm3 of Homo habilis |
Subtopic: Evolution of Homo Sapiens | Evolution Prior to Ape Man |
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The first cellular form of life evolved
1. in air
2. on land
3. in water environment
4. in deep soil
1. in air
2. on land
3. in water environment
4. in deep soil
Subtopic: Examples of Chemical Evolution |
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In Hardy-Weinberg equation, the frequency of heterozygous individual is represented by:
1.q2
2. p2
3. 2pq
4. pq
1.q2
2. p2
3. 2pq
4. pq
Subtopic: Hardy Weinberg Law: 1 |
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Consider the given two statements:
| Assertion (A): | The wings of insects and birds are analogous. |
| Reason (R): | The wings of insects and birds evolved independently in widely separated groups, and converged functionally to support powered flight |
| 1. | (A) is False but (R) is True. |
| 2. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 3. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 4. | (A) is True but (R) is False. |
Subtopic: Definition & Types of Evolution | A BRIEF ACCOUNT OF EVOLUTION |
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Which component has a very important role in prebiotic evolution:
1. Sulphur dioxide
2. Nitric oxide
3. Methane
4. Sulphuric trioxide
1. Sulphur dioxide
2. Nitric oxide
3. Methane
4. Sulphuric trioxide
Subtopic: Urey & Miller Experiment |
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Match each item in Column I with one In Column II and select the correct match from the codes given:
Codes:
| Column I | Column II | ||
| A. | Homo habilis | P. | More ape like |
| B. | Homo erectus | Q. | More man like |
| C. | Dryopithecus | R. | Probably did not eat meat. |
| D. | Ramapitehcus | S. | Probably ate meat. |
Codes:
| A | B | C | D | |
| 1. | R | S | P | Q |
| 2. | S | R | P | Q |
| 3. | S | R | Q | P |
| 4. | R | S | Q | P |
Subtopic: Evolution Prior to Ape Man |
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Natural selection can lead to:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | stabilisation in which more individuals acquire mean character value |
| II: | directional change in which more individuals acquire value other than the mean character value |
| III: | disruption in which more individuals acquire peripheral character value at both ends of the distribution curve |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Natural Selection |
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The loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population is called as:
| 1. | Edge effect | 2. | Genetic bottleneck |
| 3. | Founder effect | 4. | Saltation |
Subtopic: Hardy Weinberg Law: 2 |
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