EVOLUTION
DARWIN’S THEORY OF NATURAL SELECTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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genetic ritual
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fight to the death
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temporary competition
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struggle for existence
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Detailed explanation-1: -In On the Origin of Species, Darwin claimed that there was a continual ‘struggle for existence’ in nature, in which only the fittest would survive. This theory came partly from his reading of Thomas Malthus’s Essay on the Principle of Population.
Detailed explanation-2: -He believes Darwin faced three main problems at the time he described his theory of evolution. The first was the geological timescale needed for life to evolve, the second was the nature of inheritance and the last was the evolution of co-operation.
Detailed explanation-3: -The struggle for existence is a natural history [metaphor]. It refers to the competition between living things to survive. This, and the similar phrase struggle for life, were used over 40 times by Charles Darwin in the Origin of Species, and the phrase is the title of chapter 3 of the Origin.
Detailed explanation-4: -Some types of evidence, such as fossils and similarities between related living organisms, were used by Darwin to develop his theory of natural selection, and are still used today. Others, such as DNA testing, were not available in Darwin’s time, but are used by scientists today to learn more about evolution.