Time Machine Flashcards
Natural selection definition
Natural process that occurs over time were best-adapted individuals survive longer, have more offspring, spreading their favourable characteristics, and reducing the likelihood of unfavourable characteristics
4 Steps to Natural Selection
- Variation present in species
- Some members have favourable characteristic
- Favourable characteristic survives and reproduces
- Overtime, characteristic becomes more common in species
Fossils definition
A preserved remnant or trace of a once living organism
Transitional forms definition
Fossils that have been found to have similar characteristics from two different groups of organisms showing that they share a common ancestor
Comparative anatomy definition
Anatomy of different species can be compared to look for evidence of evolution from a common ancestor
Comparative embryology definition
Embryos of different vertebrates compared to look for evidence that these animals are related
Supporting the theory of evolution
Similarity of limbs (same homologous basic structure) suggests common ancestor. Differences of adaptations is a result of different environmental conditions between each species.