Evolution and Natural Selection
Terms
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- Evolution
- change over time
- Biological Evolution
- change in species from previous existing species
- Superposition
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(Relative Dating)
using rock layers to determine relative ages - Radioactive dating
- use of radioactive elements to determine the age
- Atomic number
- number of protons
- Mass number
- number of neutrons and protons
- Isotopes
- element with different atomic mass
- Parent
- unstable isotopes
- Daughter
- stable isotopes
- half life
- amount of time it takes for the parent to decay in half
- Homologous structures
- same from, different function
- Vestigal structure
- structure no longer used
- Analogous structure
- same function, different form
- Geographic Isolation
- changes have occured to adapt to the environment
- Natural Selection
- organisms with traits well suited to an environment survive and reproduce; strong survive; survival of the fittest
- Darwin's Theories 1
- Variation exist among individuals within a species and between spieces
- Darwin's Theories 2
- Organisms produce more offspring than the environment can support
- Darwin's Theories 3
- Competition exists among individuals
- Darwin's Theories 4
- The organisms whose variation best fit them to the environment are the ones who are most likely to survive and pass on their genetic information
- Quote
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Individuals do not evolve
Populations evolve