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Which of the following best describes the mechanism of evolution proposed by Hugo de Vries?
- a)Gradual changes through small, directional variations.
- b)Evolution through sudden, large mutations called saltation.
- c)Evolution driven by the use and disuse of organs.
- d)Stabilizing selection maintaining population traits.
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Which of the following best describes the mechanism of evolution propo...
Overview of Hugo de Vries' Evolutionary Mechanism
Hugo de Vries was a Dutch botanist and one of the early proponents of the mutation theory of evolution. His ideas were pivotal in understanding how species evolve over time.
Key Features of De Vries' Proposal
- Saltation: De Vries introduced the concept of "saltation," suggesting that evolution occurs in large, sudden jumps rather than through gradual changes. This was a departure from the gradualism proposed by Charles Darwin.
- Large Mutations: He believed that these rapid changes were due to significant mutations that could lead to the emergence of new species. These mutations could occur due to environmental factors or internal genetic changes.
- Speciation: De Vries argued that these large mutations could result in new traits that provide a survival advantage, leading to the establishment of new species.
Importance of De Vries' Theory
- Contrasts with Gradualism: His ideas challenged the traditional view of evolution, which posited that changes occur slowly and cumulatively over long periods.
- Foundation for Modern Genetics: De Vries' work laid the groundwork for the field of genetics and contributed to the understanding that mutations play a critical role in evolution.
- Integration with Natural Selection: While de Vries focused on mutations, his ideas eventually integrated with Darwinian natural selection, creating a more comprehensive understanding of evolutionary processes.
Conclusion
In summary, option 'B' accurately captures Hugo de Vries' revolutionary idea that evolution can occur through sudden, large mutations, termed saltation, which can lead to significant changes in species in a relatively short time frame.
Hugo de Vries was a Dutch botanist and one of the early proponents of the mutation theory of evolution. His ideas were pivotal in understanding how species evolve over time.
Key Features of De Vries' Proposal
- Saltation: De Vries introduced the concept of "saltation," suggesting that evolution occurs in large, sudden jumps rather than through gradual changes. This was a departure from the gradualism proposed by Charles Darwin.
- Large Mutations: He believed that these rapid changes were due to significant mutations that could lead to the emergence of new species. These mutations could occur due to environmental factors or internal genetic changes.
- Speciation: De Vries argued that these large mutations could result in new traits that provide a survival advantage, leading to the establishment of new species.
Importance of De Vries' Theory
- Contrasts with Gradualism: His ideas challenged the traditional view of evolution, which posited that changes occur slowly and cumulatively over long periods.
- Foundation for Modern Genetics: De Vries' work laid the groundwork for the field of genetics and contributed to the understanding that mutations play a critical role in evolution.
- Integration with Natural Selection: While de Vries focused on mutations, his ideas eventually integrated with Darwinian natural selection, creating a more comprehensive understanding of evolutionary processes.
Conclusion
In summary, option 'B' accurately captures Hugo de Vries' revolutionary idea that evolution can occur through sudden, large mutations, termed saltation, which can lead to significant changes in species in a relatively short time frame.
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Community Answer
Which of the following best describes the mechanism of evolution propo...
Hugo de Vries proposed that evolution occurs through sudden, large mutations (saltation), contrasting with Darwin’s gradual, small variations. He based this on his work with evening primrose, suggesting speciation happens in single, significant steps.
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Which of the following best describes the mechanism of evolution proposed by Hugo de Vries?a)Gradual changes through small, directional variations.b)Evolution through sudden, large mutations called saltation.c)Evolution driven by the use and disuse of organs.d)Stabilizing selection maintaining population traits.Correct answer is option 'B'. Can you explain this answer? for NEET 2026 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following best describes the mechanism of evolution proposed by Hugo de Vries?a)Gradual changes through small, directional variations.b)Evolution through sudden, large mutations called saltation.c)Evolution driven by the use and disuse of organs.d)Stabilizing selection maintaining population traits.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following best describes the mechanism of evolution proposed by Hugo de Vries?a)Gradual changes through small, directional variations.b)Evolution through sudden, large mutations called saltation.c)Evolution driven by the use and disuse of organs.d)Stabilizing selection maintaining population traits.Correct answer is option 'B'. Can you explain this answer?.
Which of the following best describes the mechanism of evolution proposed by Hugo de Vries?a)Gradual changes through small, directional variations.b)Evolution through sudden, large mutations called saltation.c)Evolution driven by the use and disuse of organs.d)Stabilizing selection maintaining population traits.Correct answer is option 'B'. Can you explain this answer? for NEET 2026 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following best describes the mechanism of evolution proposed by Hugo de Vries?a)Gradual changes through small, directional variations.b)Evolution through sudden, large mutations called saltation.c)Evolution driven by the use and disuse of organs.d)Stabilizing selection maintaining population traits.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following best describes the mechanism of evolution proposed by Hugo de Vries?a)Gradual changes through small, directional variations.b)Evolution through sudden, large mutations called saltation.c)Evolution driven by the use and disuse of organs.d)Stabilizing selection maintaining population traits.Correct answer is option 'B'. Can you explain this answer?.
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