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Evidence for Evolution

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Questions and Answers

What do homologous structures indicate about different organisms?

They are remnants of ancient structures with no current function.

They point to a common evolutionary origin despite serving different functions. (correct)

They provide no information about evolutionary relationships.

They evolved independently to perform the same function.

Which of the following is an example of a vestigial structure in humans?

The collarbone

The tailbone (correct)

The stomach

The heart

What type of evidence involves comparing DNA sequences of different organisms?

Behavioral evidence

Molecular evidence (correct)

Anatomical evidence

Embryological evidence

What do similarities in amino acid sequences of proteins between species suggest?

<p>They indicate a close evolutionary relationship.</p> Signup and view all the answers

Why is embryological evidence significant in the study of evolution?

<p>It indicates that embryos of closely related organisms have similar development stages.</p> Signup and view all the answers

Study Notes

Evidence for Evolution

Structural Similarities: Organisms with similar evolutionary pressures may develop similar structures, even if they have different origins.
Vestigial Structures: Remnants of ancestral structures that may have lost their original function. Examples are common in vertebrates(the given example in the image is flippers and jaws in organisms like sharks and fish).
Embryological Similarities: Embryos of closely related organisms often have similar developmental stages.
DNA/Protein Similarities: Comparing DNA and protein sequences reveal similarities indicating common ancestry. Similar amino acid sequences in proteins suggest more closely related organisms. If two organisms inherit similar DNA sequences, those sequences must have derived from a common ancestor.

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Description

This quiz explores key evidence supporting the theory of evolution. Topics include structural similarities, vestigial structures, embryological similarities, and DNA/protein sequence comparisons. Test your understanding of these concepts and their implications in evolutionary biology.