Topic: Natural Selection Could Not Occur without
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Answers to Common Questions
What could natural selection not occur without?
Genetic Variability. What does the first born inherit from mom and what from dad? and the second born is a whole new mixture of mom & dad (this occurs during "cross-over") This is what leaves some siblings being weaker and others being stro... Read More »
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How does Natural Selection Occur?
Natural selection is basically the pressure that Nature puts on an species' ability to survive. It acts on physical characteristics of a species by placing a premium on physical changes that give it an advantage in reproduction. This advant... Read More »
Source: http://answers.ask.com/Science/Biology/how_does_natural_selection...
Why could natural selection not occur without genetic variation i...
Natural selection is the selection of a certain trait as more favourable - meaning those individuals are more likely to reproduce. If there was no variation, all individuals should have the same probability of reproducing, and the future ge... Read More »
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Answers to Other Common Questions
evolution
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Without genetically/morphologically beneficial variations what would be selected? Clones do not evolve.
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When there is competition
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Source: http://wiki.answers.com/Q/When_will_natural_selection_occur
The presence of predators and changes in environment.
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Source: http://wiki.answers.com/Q/Which_causes_natural_selection_to_occur
1) A characteristic/trait which provides an advantage(s) to the survival of the organism, in response to 2) an environmental factor/selection pressure. The environmental factor can be any of a vast array of pressures such as mate selection,...
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The presence of predators
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Source: http://wiki.answers.com/Q/What_causes_natural_selection_to_occur
the unequal ability of individuals to survive and reproduce
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Source: http://wiki.answers.com/Q/What_allows_natural_selection_to_occur
