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Which of the following sequences fits into the organic evolution theory proposed by Charles Darwin and Alfred Wallace?
- a)Variations, constancy of population size, overproduction, natural selection
- b)Variations, overproduction, constancy of population size, natural selection
- c)Overproduction, variations, constancy of population size, natural selection
- d)Overproduction, constancy of population size, variations, natural selection
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Which of the following sequences fits into the organic evolution theor...
The 'theory of organic evolution' was given by Charles Darwin and Alfred Wallace independently. It states that 'changes in the genetic makeup of species in a population as a result of responding to environmental changes is organic evolution'. It means that the variations in the genes of a population due to competition and environmental changes lead to evolution into a more adapted and competitive species.
The sequence of organic evolution theory:
Overpopulation → Constancy of population size → Variation → Natural Selection
Overpopulation:
The sequence of organic evolution theory:
Overpopulation → Constancy of population size → Variation → Natural Selection
Overpopulation:
- Most organisms produce more offspring than the resources can carry.
- The reproductive rate is high and the resources are limited.
- More offspring means more variation in the next generation.
- Example: Starfish produces 1 million eggs, and E. coli divides every two minutes.
The constancy of Population size:
- Despite a large number of offspring, the population size remains constant.
- This is due to three reasons:
- Intraspecific competition - competition within the species.
- Interspecific competition - competition between the species.
- Environmental factors - elimination of offspring due to adverse environmental factors.
- A vast majority of offspring who are weaker, less adapted, and less competitive are eliminated or die.
Variation:
- Variation means that the offspring is not a clone of either parent and is different and unique.
- The offspring who survive, have genes that are best suited to the environment.
- They have genetic variations that are more adapted to the external environment and have a more competitive ability.
- Useful variations are selected and harmful variations are removed.
Natural Selection:
- This leads to the natural selection of progeny.
- Nature in each successive generation selects for the progeny which is more suited to the external environment.
- There is selective pressure on the individuals, due to limited resources, competition, and adverse environment.
- This is called the struggle for existence.
- Natural selection takes place in favor of those that have higher reproductive fitness and survive better.
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Which of the following sequences fits into the organic evolution theory proposed by Charles Darwin and Alfred Wallace?a)Variations, constancy of population size, overproduction, natural selectionb)Variations, overproduction, constancy of population size, natural selectionc)Overproduction, variations, constancy of population size, natural selectiond)Overproduction, constancy of population size, variations, natural selectionCorrect answer is option 'D'. Can you explain this answer?
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Which of the following sequences fits into the organic evolution theory proposed by Charles Darwin and Alfred Wallace?a)Variations, constancy of population size, overproduction, natural selectionb)Variations, overproduction, constancy of population size, natural selectionc)Overproduction, variations, constancy of population size, natural selectiond)Overproduction, constancy of population size, variations, natural selectionCorrect answer is option 'D'. Can you explain this answer? for Software Development 2025 is part of Software Development preparation. The Question and answers have been prepared according to the Software Development exam syllabus. Information about Which of the following sequences fits into the organic evolution theory proposed by Charles Darwin and Alfred Wallace?a)Variations, constancy of population size, overproduction, natural selectionb)Variations, overproduction, constancy of population size, natural selectionc)Overproduction, variations, constancy of population size, natural selectiond)Overproduction, constancy of population size, variations, natural selectionCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Software Development 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following sequences fits into the organic evolution theory proposed by Charles Darwin and Alfred Wallace?a)Variations, constancy of population size, overproduction, natural selectionb)Variations, overproduction, constancy of population size, natural selectionc)Overproduction, variations, constancy of population size, natural selectiond)Overproduction, constancy of population size, variations, natural selectionCorrect answer is option 'D'. Can you explain this answer?.
Which of the following sequences fits into the organic evolution theory proposed by Charles Darwin and Alfred Wallace?a)Variations, constancy of population size, overproduction, natural selectionb)Variations, overproduction, constancy of population size, natural selectionc)Overproduction, variations, constancy of population size, natural selectiond)Overproduction, constancy of population size, variations, natural selectionCorrect answer is option 'D'. Can you explain this answer? for Software Development 2025 is part of Software Development preparation. The Question and answers have been prepared according to the Software Development exam syllabus. Information about Which of the following sequences fits into the organic evolution theory proposed by Charles Darwin and Alfred Wallace?a)Variations, constancy of population size, overproduction, natural selectionb)Variations, overproduction, constancy of population size, natural selectionc)Overproduction, variations, constancy of population size, natural selectiond)Overproduction, constancy of population size, variations, natural selectionCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Software Development 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following sequences fits into the organic evolution theory proposed by Charles Darwin and Alfred Wallace?a)Variations, constancy of population size, overproduction, natural selectionb)Variations, overproduction, constancy of population size, natural selectionc)Overproduction, variations, constancy of population size, natural selectiond)Overproduction, constancy of population size, variations, natural selectionCorrect answer is option 'D'. Can you explain this answer?.
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