Soto Theories of Evolution Flashcards
Reasons for Extinction
Small Population
-intense competition
-unfavorable mutations
-major catastrophes
-drastic changes in the environment.
Reasons for Stability/ Not experiencing evolution
-no/neutral mutations
-stable gene frequency
-large population
-no competition
-stable isolated population with no migration
Consequences of Migration (if a group is moving in)
The genes may successfully become a new part of the population
Consequences of Migration (if a group is moving out)(involving dominant allele)
the recessive may have a chance to be revealed
Lamarck’s theory-year
1801
Lamarck’s theory-Name
Theory of Acquired characteristics
Lamarck’s theory-components
-Organisms develop a structure to ensure survival
-Evolution involved changes in the somatic cells
Lamarck’s theory- Flaw(s)
Lacked research
Darwin-year
1859
Darwin- theory name
Natural Selection
Darwin-Components
-Organisms produce more than can survive
-organisms compete for food and shelter
-variations exist within a species
-Advantages survive
-survival of the fittest
Mendel
year-1866
name-Dominant and Recessive
Components-explains variety through genetics/concerned with probability
DeVries
Year-1901
Name-Theory of Mutations
Components-Mutations provide variety/Adaptive mutations are inherited by offspring
flaw-Did not explain the cause of mutations
Hardy Weinberg- year
1908
Hardy Weinberg- name
Theory of Populations
