Evidence of Evolution

The flipper of a whale and the arm of a human have a similar bone structure, but different functions.

• similar cell structures

• homologous structures (similar anatomy)

• similar embryos

• biochemical/molecular evidence

The earliest stages of development in a chicken and fish have gill slits and a tail.

• fossil evidence

• analogous structures

• biochemical/molecular evidence

• comparing embryo structure

Tags

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The leg bones of a whale are present, even though they are no longer in use.

• similar embryos

• vestigial structures (comparing anatomy)

• comparing cell structures

• comparing biochemistry/molecular evidence

Tags

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Blue green algae and bacteria lack a nucleus.

• homologous structures

• comparing cell structures

• biochemical evidence

• vestigial structures

The base sequence in the DNA of chimpanzees and humans is 99% similar.

• biochemical/molecular evidence

• comparing anatomy

• comparing embryos

• fossil evidence

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The remains of a human and a mammoth have been found preserved in ice.

• analogous structures

• comparing embryos

• comparing anatomy

• fossil evidence

Tags

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Some humans have a non-functional muscle in their arm(s) called the palmaris longus.

• analogous structures

• molecular evidence

• vestigial structures

• comparing embryos

Tags

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The remains of prehistoric mosquitoes have been found preserved in amber.

• comparing anatomy

• comparing cell structures

• fossil evidence

• similar embryos

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The DNA of most organisms is coiled around histone proteins

• comparing embryos

• biochemical/molecular evidence

• comparing anatomy

• analogous structures

Tags

NGSS.HS-LS1-1

Similarities in bone arrangements, like those in the picture, support the hypothesis that...

• these organisms are not well adapted

• these organisms share a common ancestor

• these organisms all share the same DNA sequences

• these organisms are members of the same species

Tags

NGSS.HS-LS4-1