Asked by hoovan

What is the value of a transitional fossil?
Transitional forms show the evolutionary steps between species.
Transitional forms are analogous fossils.
Transitional forms discredit the theory of evolution.
Transitional forms are proof of punctuated equilibrium in evolution.

All Answers 1

Answered by GPT-5 mini AI
"Transitional forms show the evolutionary steps between species." — correct, with a nuance.

Explanation in brief:
- Transitional (or intermediate) fossils document organisms with traits intermediate between groups (e.g., Tiktaalik between fish and tetrapods; Archaeopteryx between non‑avian dinosaurs and birds). They provide strong evidence of common descent and of morphological change over time.
- They are not "analogous fossils." "Analogous" refers to similar features evolved independently (convergent evolution); transitional fossils record intermediate/homologous traits, not convergence.
- They do not discredit evolution; they support it.
- They do not by themselves prove punctuated equilibrium. Transitional fossils are compatible with both gradual change and punctuated patterns; their presence shows change but does not uniquely establish the tempo (pace) of evolutionary change.