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Read the passages carefully and choose the best answer to each question out of the four alternatives.
Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author YoshanMoodley, Professor at the Department of Zoology, the University of Venda in South Africa.
Two centuries ago, the black rhinoceros – which roamed much of sub-Saharan Africa – had 64 different genetic lineages; but today only 20 of this lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the 'genetic erosion'coincided with the colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.
Q. What is important for evolution?
  • a)
    Genetic variation
  • b)
    Large population
  • c)
    Mixing of species
  • d)
    Survival of the fittest
Correct answer is option 'A'. Can you explain this answer?
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Refer to, “Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce.”
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Genetic Variation: The Cornerstone of Evolution
Genetic variation is crucial for evolution as it provides the raw material for natural selection to act upon. Here are some key points explaining why genetic variation is essential for the process of evolution:
Increased Adaptability:
- Genetic variation allows for differences in traits within a population, increasing the likelihood of some individuals being better suited to survive in changing environments.
- This adaptability is essential for a species to cope with challenges such as climate change, habitat loss, or the emergence of new predators.
Enhanced Reproductive Success:
- Genetic diversity within a population can lead to increased reproductive success, as individuals with different genotypes may have offspring with a wider range of traits.
- This genetic diversity helps maintain healthy populations by reducing the risk of inbreeding and the negative effects associated with it.
Long-Term Survival:
- Without genetic variation, a species may lack the necessary diversity to overcome threats such as diseases or environmental changes.
- Over time, genetic variation allows for the accumulation of beneficial traits through natural selection, increasing the overall fitness of a population.
Conclusion:
In summary, genetic variation is fundamental to the process of evolution, enabling species to adapt, survive, and thrive in a dynamic and ever-changing world. It is essential for the long-term viability of populations and plays a critical role in shaping the diversity of life on Earth.
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Read the passages carefully and choose the best answer to each question out of the four alternatives.Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author YoshanMoodley, Professor at the Department of Zoology, the University of Venda in South Africa.Two centuries ago, the black rhinoceros – which roamed much of sub-Saharan Africa – had 64 different genetic lineages; but today only 20 of this lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the genetic erosioncoincided with the colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.Q. What is important for evolution?a)Genetic variationb)Large populationc)Mixing of speciesd)Survival of the fittestCorrect answer is option 'A'. Can you explain this answer?
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Read the passages carefully and choose the best answer to each question out of the four alternatives.Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author YoshanMoodley, Professor at the Department of Zoology, the University of Venda in South Africa.Two centuries ago, the black rhinoceros – which roamed much of sub-Saharan Africa – had 64 different genetic lineages; but today only 20 of this lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the genetic erosioncoincided with the colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.Q. What is important for evolution?a)Genetic variationb)Large populationc)Mixing of speciesd)Survival of the fittestCorrect answer is option 'A'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about Read the passages carefully and choose the best answer to each question out of the four alternatives.Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author YoshanMoodley, Professor at the Department of Zoology, the University of Venda in South Africa.Two centuries ago, the black rhinoceros – which roamed much of sub-Saharan Africa – had 64 different genetic lineages; but today only 20 of this lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the genetic erosioncoincided with the colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.Q. What is important for evolution?a)Genetic variationb)Large populationc)Mixing of speciesd)Survival of the fittestCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Read the passages carefully and choose the best answer to each question out of the four alternatives.Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author YoshanMoodley, Professor at the Department of Zoology, the University of Venda in South Africa.Two centuries ago, the black rhinoceros – which roamed much of sub-Saharan Africa – had 64 different genetic lineages; but today only 20 of this lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the genetic erosioncoincided with the colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.Q. What is important for evolution?a)Genetic variationb)Large populationc)Mixing of speciesd)Survival of the fittestCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Read the passages carefully and choose the best answer to each question out of the four alternatives.Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author YoshanMoodley, Professor at the Department of Zoology, the University of Venda in South Africa.Two centuries ago, the black rhinoceros – which roamed much of sub-Saharan Africa – had 64 different genetic lineages; but today only 20 of this lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the genetic erosioncoincided with the colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.Q. What is important for evolution?a)Genetic variationb)Large populationc)Mixing of speciesd)Survival of the fittestCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Defence. Download more important topics, notes, lectures and mock test series for Defence Exam by signing up for free.
Here you can find the meaning of Read the passages carefully and choose the best answer to each question out of the four alternatives.Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author YoshanMoodley, Professor at the Department of Zoology, the University of Venda in South Africa.Two centuries ago, the black rhinoceros – which roamed much of sub-Saharan Africa – had 64 different genetic lineages; but today only 20 of this lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the genetic erosioncoincided with the colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.Q. What is important for evolution?a)Genetic variationb)Large populationc)Mixing of speciesd)Survival of the fittestCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Read the passages carefully and choose the best answer to each question out of the four alternatives.Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author YoshanMoodley, Professor at the Department of Zoology, the University of Venda in South Africa.Two centuries ago, the black rhinoceros – which roamed much of sub-Saharan Africa – had 64 different genetic lineages; but today only 20 of this lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the genetic erosioncoincided with the colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.Q. What is important for evolution?a)Genetic variationb)Large populationc)Mixing of speciesd)Survival of the fittestCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Read the passages carefully and choose the best answer to each question out of the four alternatives.Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author YoshanMoodley, Professor at the Department of Zoology, the University of Venda in South Africa.Two centuries ago, the black rhinoceros – which roamed much of sub-Saharan Africa – had 64 different genetic lineages; but today only 20 of this lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the genetic erosioncoincided with the colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.Q. What is important for evolution?a)Genetic variationb)Large populationc)Mixing of speciesd)Survival of the fittestCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Read the passages carefully and choose the best answer to each question out of the four alternatives.Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author YoshanMoodley, Professor at the Department of Zoology, the University of Venda in South Africa.Two centuries ago, the black rhinoceros – which roamed much of sub-Saharan Africa – had 64 different genetic lineages; but today only 20 of this lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the genetic erosioncoincided with the colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.Q. What is important for evolution?a)Genetic variationb)Large populationc)Mixing of speciesd)Survival of the fittestCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Read the passages carefully and choose the best answer to each question out of the four alternatives.Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author YoshanMoodley, Professor at the Department of Zoology, the University of Venda in South Africa.Two centuries ago, the black rhinoceros – which roamed much of sub-Saharan Africa – had 64 different genetic lineages; but today only 20 of this lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the genetic erosioncoincided with the colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.Q. What is important for evolution?a)Genetic variationb)Large populationc)Mixing of speciesd)Survival of the fittestCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Defence tests.
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