RC 03 (9AB,10ABCD) Common Ancestry, Fossil Appearance Rate

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What is common ancestry?

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Common ancestry refers to the idea that different species share a common ancestor from which they evolved. This concept is fundamental in understanding evolutionary biology.

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What is natural selection?

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Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring. It is a key mechanism of evolution.

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What is a phenotype?

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A phenotype is the observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.

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What is genetic drift?

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Genetic drift is a mechanism of evolution that refers to random changes in the frequency of alleles (gene variants) in a population, which can lead to reduced genetic variation.

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What is speciation?

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Speciation is the evolutionary process by which populations evolve to become distinct species, often due to geographic isolation or environmental changes.

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What is camouflage in terms of evolution?

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Camouflage is a survival strategy where an organism blends in with its environment to avoid predation, enhancing its chances of survival and reproduction.

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What is the significance of fossil records in understanding evolution?

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Fossil records provide evidence of past life forms and their evolution over time, helping scientists understand the history of life and the process of evolution.

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What is the role of mutations in evolution?

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Mutations are changes in DNA that can create new traits in organisms. Some mutations may be beneficial, providing an advantage in survival and reproduction.

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What is the difference between homologous and analogous structures?

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Homologous structures are similar due to shared ancestry, while analogous structures are similar due to convergent evolution, not common ancestry.

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What is adaptive radiation?

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Adaptive radiation is the process by which organisms diversify rapidly into a wide variety of forms to adapt to different environments.