Fossil Record: Chronological progression of historical organisms, demonstrating transitional forms.
Homologous Structures: Similar underlying anatomy inherited from a common ancestor (e.g., forelimbs of humans and whales).
Analogous Structures: Similar functions evolving independently due to similar environments, NOT common ancestry (Convergent evolution).
Molecular Biology: Comparing DNA or amino acid sequences (e.g., Cytochrome c) shows relatedness accurately.
Tags
EvolutionFossilsHomologyDNA
Select Evidence Type
Fossil Record: The deeper the rock layer (stratum), the older the fossil. Radiometric dating confirms age, showing a progression from single cells to complex tetrapods over hundreds of millions of years. Transitional fossils (like Tiktaalik) link fish and land animals.
Homologous vs Analogous
Homologous: Same structure, different function (Common Ancestor).
Analogous: Different structure, same function (Convergent Evolution, NO common ancestor). Ex: Bat wing vs Insect wing.