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Q. No.The frequencies of dominant and recessive alleles of a gene in a population are 0.7 and 0.3 respectively. The expected frequency for heterozygotes in the population is likely to be:
1.
42%
2.
49%
3.
21%
4.
9%
Subtopic: Hardy Weinberg Law |
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Consider the two statements:
| Statement I: | Ramapithecus was more man-like. |
| Statement II: | Dryopithecus was more ape-like. |
| 1. | Statement I is incorrect; Statement II is incorrect |
| 2. | Statement I is incorrect; Statement II is correct |
| 3. | Statement I is correct; Statement II is correct |
| 4. | Statement I is correct; Statement II is incorrect |
Subtopic: Evolution Prior to Ape Man |
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Level 1: 80%+
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The beak of the original variety of Darwin finches was adapted for:
1. Seed-eating
2. Nectar sucking
3. Insect eating
4. Piercing hardwood on stem trunks
Subtopic: Darwin's Theory |
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Embryological support for evolution was proposed by:
1. Ernst Mayr
2. Ernst Haeckel
3. Hugo de Vries
4. Kary Mullis
Subtopic: Embryological Evidence of Evolution |
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In 1953, S.L. Miller created conditions similar to those suggested by Oparin and Haldane in a laboratory where he created electric discharge in a closed flask containing:
| 1. | CH4, H2, NH3 and water vapour at 800°C |
| 2. | CH4, H2, HCN and hydrogen sulphide at 400°C |
| 3. | CO2, H2, NH3 and water vapour at 800°C |
| 4. | CO2, H2, HCN and hydrogen sulphide at 400°C |
Subtopic: Urey & Miller Experiment |
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Oparin and Haldane proposed that:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | First form of life could have come from pre-existing non-living organic molecules. |
| II: | Formation of life was preceded by chemical evolution. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Examples of Chemical Evolution | Urey & Miller Experiment |
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Identify the fossil of a man who showed the following characteristics:
(A) Brain capacity of 1400 cc
(B) Used hides to protect their body
(C) Buried their dead bodies
In the light of above statements, choose the correct answer from the options given below:
(A) Brain capacity of 1400 cc
(B) Used hides to protect their body
(C) Buried their dead bodies
In the light of above statements, choose the correct answer from the options given below:
| 1. | Homo erectus | 2. | Neanderthal man |
| 3. | Homo habilis | 4. | Australopithecus |
Subtopic: Evolution Prior to Ape Man |
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NEET - 2023
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| Assertion(A): | After industrialization, dark winged moths became predominant over light winged moths. |
| Reason(R): | During post-industrialization period, the white coloured moths were spotted by predators against the contrasting background of tree-trunks. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are true and (R) is not the correct explanation of (A) |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Natural Selection |
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| Assertion(A): | Antibiotic resistance is increasing these days. |
| Reason(R): | Excessive use of antibiotics in a much lesser time scale has led to selection of resistant varieties. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are true and (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Natural Selection |
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| Assertion(A): | Darwin's finches radiated from seed-eating features to insectivorous and vegetarian forms. |
| Reason(R): | Species adapt according to the geography (habitat). |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are true and (R) is not the correct explanation of (A) |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Darwin's Theory |
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