EVOLUTION
MODERN THEORY OF EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The food source in a lake is not enough to support the bass population, but it can support the trout.
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A population of brown bears has doubled in the past 10 years as its habitat size has increased.
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Owls and foxes compete fiercely against each other for small rodents in their habitat.
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Brightly colored cardinals are better able to survive and to reproduce than darker cardinals
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Detailed explanation-1: -"Brightly colored cardinals are better able to survive and to reproduce than darker cardinals” is the one among the following that is an example that can be explained by individual variation.
Detailed explanation-2: -Darwin’s theory of ‘evolution by natural selection’ relies on variation among individual animals or plants of the same species. The best adapted individuals will survive the ‘struggle of life’ and will pass their successful characteristics onto their offspring.
Detailed explanation-3: -"Variation is a feature of natural populations and every population produces more progeny than its environment can manage. The consequences of this overproduction is that those individuals with the best genetic fitness for the environment will produce offspring that can more successfully compete in that environment.
Detailed explanation-4: -In the mid-1800s, Charles Darwin famously described variation in the anatomy of finches from the Galapagos Islands. Alfred Russel Wallace noted the similarities and differences between nearby species and those separated by natural boundaries in the Amazon and Indonesia.
Detailed explanation-5: -Fossil evidence supports evolution. These specimens provided evidence that species existing in the past were very similar to species living during Darwin’s time. For example, the fossil of an extinct animal called the glyptodon resembles the modern armadillo, an animal found today in South America.