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Read the following statements and select the correct option.
(i) Increase in melanised moths after industrialisation in Great Britain is a proof for natural selection.
(ii) When more individuals of a population acquire a mean character value, it is called disruption.
(iii) Changes in allelic frequency in a population will lead to Hardy-Weinberg equilibrium.
(iv) Genetic drift changes the existing gene or allelic frequency in future generations.
- a)Only (ii) is correct
- b)Only (iv) is correct
- c)Both (i) and (iv) are correct
- d)Both (i) and (iii) are correct
Correct answer is option 'C'. Can you explain this answer?
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Read the following statements and select the correct option.(i) Incre...
Explanation:
Increasing in melanised moths after industrialization in Great Britain is indeed a proof for natural selection as the change in environment (from light-colored trees to dark-colored trees due to pollution) favored the survival of moths with darker coloration, leading to an increase in their population. This is a classic example of natural selection in action.
Genetic Drift
Genetic drift is a random process that can lead to changes in the existing gene or allelic frequency in future generations. It is more pronounced in small populations where chance events can have a significant impact on allele frequencies.
Therefore, both statement (i) and (iv) are correct. Melanised moths in Great Britain and genetic drift are both examples of mechanisms that can lead to changes in allele frequencies in a population over time.
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Read the following statements and select the correct option.(i) Incre...
When more individuals of a population acquire a mean character value, it is called stabilizing selection. No change in allelic frequency in a population will lead to Hardy- Weinberg equilibrium. Hardy- Weinberg Principle- in a given population, the frequency of occurrence of alleles or genes can be finding out. These frequencies remain fixed and even remain the same through generation. This fact was represented by Hardy-Weinberg principles using an algebraic equation.
According to Hardy-Weinberg’s principle, In a given population, allele frequencies of a gene (or a locus) are stable and constant from generation to generation. The gene pool remains constant and is called genetic equilibrium.
Hardy-Weinberg principle can be stated using algebraic equations:
Frequency of dominant allele A is p
Frequency of recessive allele a is q
Sum of alleles = p + q = 1
Frequency of Homozygous dominant = p × p = p2
Frequency of Heterozygous individuals = 2 × p × q = 2pq
Frequency of Homozygous recessive = q × q = q2
That means (p + q)2 = p2 + 2pq + q2 = 1
There are five factors that are known to affect Hardy-Weinberg equilibrium:
- Gene migration or gene flow.
- Genetic drift.
- Mutation or Saltation.
- Genetic recombination.
- Natural selection.
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Read the following statements and select the correct option.(i) Increase in melanised moths after industrialisation in Great Britain is a proof for natural selection.(ii) When more individuals of a population acquire a mean character value, it is called disruption.(iii) Changes in allelic frequency in a population will lead to Hardy-Weinberg equilibrium.(iv) Genetic drift changes the existing gene or allelic frequency in future generations.a)Only (ii) is correctb)Only (iv) is correctc)Both (i) and (iv) are correctd)Both (i) and (iii) are correctCorrect answer is option 'C'. Can you explain this answer?
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Read the following statements and select the correct option.(i) Increase in melanised moths after industrialisation in Great Britain is a proof for natural selection.(ii) When more individuals of a population acquire a mean character value, it is called disruption.(iii) Changes in allelic frequency in a population will lead to Hardy-Weinberg equilibrium.(iv) Genetic drift changes the existing gene or allelic frequency in future generations.a)Only (ii) is correctb)Only (iv) is correctc)Both (i) and (iv) are correctd)Both (i) and (iii) are correctCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Read the following statements and select the correct option.(i) Increase in melanised moths after industrialisation in Great Britain is a proof for natural selection.(ii) When more individuals of a population acquire a mean character value, it is called disruption.(iii) Changes in allelic frequency in a population will lead to Hardy-Weinberg equilibrium.(iv) Genetic drift changes the existing gene or allelic frequency in future generations.a)Only (ii) is correctb)Only (iv) is correctc)Both (i) and (iv) are correctd)Both (i) and (iii) are correctCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Read the following statements and select the correct option.(i) Increase in melanised moths after industrialisation in Great Britain is a proof for natural selection.(ii) When more individuals of a population acquire a mean character value, it is called disruption.(iii) Changes in allelic frequency in a population will lead to Hardy-Weinberg equilibrium.(iv) Genetic drift changes the existing gene or allelic frequency in future generations.a)Only (ii) is correctb)Only (iv) is correctc)Both (i) and (iv) are correctd)Both (i) and (iii) are correctCorrect answer is option 'C'. Can you explain this answer?.
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