Evolution Evidence

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What is the fossil record?

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The fossil record is a historical sequence of life on Earth, represented by the remains of organisms preserved in sedimentary rock layers, showing the progression of species over time.

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What are homologous structures?

Back

Homologous structures are anatomical features in different species that share a common ancestry, even though they may serve different functions.

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What does it suggest if modern organisms have many homologous structures?

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It suggests that these organisms share a common ancestor.

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What are vestigial structures?

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Vestigial structures are anatomical features that have lost most or all of their original function through the course of evolution.

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What is adaptive radiation?

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

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What are analogous structures?

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Analogous structures are features in different species that serve similar functions but do not share a common ancestry.

Front

What is the significance of the opossum and kangaroo having pouches?

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It provides evidence that they are descended from a common ancestor.

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What is molecular evidence in evolution?

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Molecular evidence refers to the genetic similarities and differences among organisms that can indicate evolutionary relationships.

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What is the principle of natural selection?

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Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.

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What is the difference between artificial selection and natural selection?

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Artificial selection is the intentional breeding of organisms for desired traits, while natural selection occurs without human intervention.