Evidence of Evolution

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The similarities in organisms are due to...

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Common Ancestry

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______ is the type of evolution that occurs over a short period of time.

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Punctuated Equilibrium

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Older fossils appear in rock layers...

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below new fossils

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Similarities between organisms when they are embryos (due to common ancestry and evolution) are known as...

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Developmental Homology

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A structure/organ in an organism that no longer has a purpose but had a purpose for the organism’s ancestors is called...

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Vestigial Structure

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The process by which different species evolve from a common ancestor is known as...

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Evolution

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The study of the distribution of species and ecosystems in geographic space and through geological time is called...

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Biogeography

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Structures that are similar in different species due to shared ancestry are referred to as...

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Homologous Structures

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The concept that species evolve at a slow, steady rate is known as...

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Gradualism

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The remnants of organs or structures that had a function in an early ancestor are called...

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Vestigial Structures