ch 19: Natural Selection Flashcards
Scala Naturae
Aristotle – the scale of increasing complexity, not to be modified
Old Testament
Perfect Species designed by God
Carolus Linnaeus
Grouped species by traits, Taxonomy, Binomial nomenclature
George Cuvier
Catastrophism
Charles Lyell
Uniformitarianism (old earth)
paleontology
the study of fossils was largely developed by French scientist Georges Cuvier
Catastrophism
speculating that each boundary between strata/layers represents a catastrophe
Geologists James Hutton and Charles Lyell
perceived that changes in Earth’s surface can result from slow continuous actions still operating today
uniformitarianism
the mechanisms of change are constant over time, Lyell’s principle, This view strongly influenced Darwin’s thinking
Jean-Baptiste de Lamarck
An early theory of Evolution based on two principles
use and disuse
If used becomes stronger, if not used deteriorate
Inheritance of acquired characteristics
assumes characteristics acquired during an organism’s life could be passed to the next generation
Charles Darwin
HMS Beagle – 1831 – 1836 Naturalist, went on a voyage and collected stuff
Nature selection
explains how adaptions arise, theory of evolution by this, Natural Selection is a process that allows individuals with favorable Hereditable Characteristics to survival and reproduction at a higher rate (better fit)
- required environment to have specific carrying capacity
- required heritable traits in animals
Adaptations
characteristics that allow an animal to survive and
reproduce in a specific environment