Development Of Darwin's Theory Flashcards
1
Q
What could Darwin not explain in his theory?
A
How variation occurred and the why the evolution of characteristics in fossils wasn’t gradual (lack of fossils discovered)
2
Q
What is the pentadactyl limb?
A
A limb that has five digits (fingers and thumbs). Amphibians, reptiles, birds and mammals share this characteristic.
3
Q
What does the pentadactyl limb show us about the evolution of different animals?
A
All of the animals with the pentadactyl limb are derived from a common ancestor.
The limb bone similarities show that the limb wasn’t designed for specific purposes but evolved for swimming, flying, walking etc.