- Slides: 69
Patterns of Evolution
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What did Darwin call Natural Selection
Survival of the Fittest
The process where the breeder selects the best trait is called?
What is the name of the book that Darwin wrote?
The Origin of Species
Hutton & Lylle both said what about the formation of the earth?
The earth is millions of years old/the earth was formed by geologic forces
The 2 guys that came up with a mathematical equation that can predict allele frequencies?
Hardy & Weinberg
All of the genes in a population is called?
Name 2 sources of genetic variation.
Mutations Crossover (Gene Shuffling)
Any organ that is reduced in function that may have been used by an ancestor?
Body structures that are similar in structure and function?
Body structures that are similar in function but different in structure are called?
A trait controlled by more than one gene is called?
A random change in allele frequencies over the generations is called?
When allele frequencies remain constant it is called?
What occurs when allele frequencies in a group of migrating individuals are by chance not the same as that of the original population?
What effect can happen when a population’s numbers undergoes a drastic decrease?
Where individuals with favorable traits survive & pass on those traits to their offspring?
When natural selection favors one extreme phenotype or the other.
When natural selection doesn’t favor either extreme phenotype.
When natural selection favors both extreme phenotypes.
What are the 5 conditions to maintain genetic equilibrium
1. Must be random mating 2. Must have a large pop. Size 3. No movement of genes 4. No mutations 5. No Natural selection
The evolution of a new species
When 2 populations become separated by a geographic barrier (river, mtn. etc)
When a species doesn’t recognize another species as a mate because it didn’t do the correct mating dance or call or make the correct display
When 2 species mate at different times
When members of a population can no longer interbreed with the rest of the population is called?
Large scale evolution that takes place over a long period of time
What percentage of species that lived on earth have become extinct?
Where two or more species originate from one species called a common ancestor.
Where 2 different species evolve in response to one another.
What is it called when 2 different species inhabit similar environments and evolve similar traits.