Evidence for/Against Macroevolution

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Questions and Answers

What does the geological column data suggest about macroevolution?

Behavioral evidence supporting gradual evolution
Strong evidence against macroevolution
Inconclusive evidence regarding macroevolution (correct)
Strong evidence for macroevolution

The fossil record provides strong support for gradual evolution.

False (B)

Name one type of evidence that contradicts macroevolution.

Fossil record, structural homology, or molecular biology.

The majority of data from _______ reveals little to no evolutionary patterns in protein sequences.

<p>molecular biology</p> Signup and view all the answers

Match the evidence category with its stance on macroevolution:

<p>Geological column = Inconclusive Fossil record = Against Structural homology = Against Molecular biology = Against</p> Signup and view all the answers

Flashcards

Geological Column (GC)

The geological column (GC) shows a progression of life forms over time. However, the lack of clear intermediate links between species suggests a possibility that it may have formed through abrupt events rather than a continuous gradual evolution.

Fossil Record and Macroevolution

The fossil record largely lacks intermediate links between species, challenging the idea of gradual evolution. While some fossils resemble existing species, they are not conclusively transitional forms.

Structural Homology

Structural homology, where organisms share similar structures like the bones in a limb, doesn't necessarily support evolution because these structures could have evolved independently from different genetic origins.

Molecular Biology and Evolutionary Patterns

Molecular biology studies primarily show little to no evolutionary patterns in protein amino acid sequences. This contradicts the prediction of gradual evolutionary changes.

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Cambrian Explosion

The Cambrian explosion refers to the rapid diversification of life that occurred during the Cambrian period. This sudden burst of new species challenges the theory of gradual evolution.

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Study Notes

Evidence for/Against Macroevolution

Geological Column (GC): Inconclusive.
- The GC shows life forms developing from early to complex, but some argue the GC was formed by a natural catastrophe.
- There are gaps in the record that don't fully connect species.
Fossil Record: Against.
- Few fossils show a transitional stage between species
- Limited fossils make it difficult to demonstrate evolution.
Structural Homology: Against.
- Similar structures may be caused by different genetic mechanisms.
Molecular Biology: Against.
- Little evidence of evolutionary patterns in amino acid sequences of common proteins.
- Most data show there's no evolutionary pattern.