Darwin
Organisms that adapt over time in response to their changing environment.
What is the theory of evolution?
Provides a record of how animals evolve, and shows that all species are related to each other.
What is fossil evidence?
Evolution that happens within a short period of time.
What is Microevolution?
A change in the DNA sequence of an organism.
What is mutation?
Keeps genes in a narrow window (if a baby is too bug or too small that baby has a higher risk of dying as well as the mother.)
What is stabilizing selection?
French naturalist who believed in the inheritance of acquired characteristics. (Darwins Influence)
Who is Jean Baptiste Lamarck?
Similar structures are inherited from a common ancestor but serve different functions. (Comparative Anatomy)
What is Homologous Structure?
Evolution that happens over a long period of time.
What is macroevolution?
Individuals move in and out of gene pools.
What is gene flow?
Two extreme phenotypes are selected (finches beaks, long/slender or thick/strong.)
What is Directional Selection?
English economist who believed that if the human population grows too fast for resources the weakest will die. (Darwin's Influence)
Who is Thomas Malthus?
Structures that are similar in function but come from unrelated organisms. (Comparative Anatomy)
What is an Analogous Structure?
Science that focuses on the evolution within a population.
What is Population Genetics?
random changes in a small population; sudden decrease.
What is Genetic Drift: Bottleneck?
Phenotypes in the middle of the range are selected against (male cardinals red and female cardinals gray.)
What is Disruptive Selection?
A book written by Charles Darwin.
What is the Origin of Species?
Study of the similarities and differences in embryos of different species.
What is Comparative Embyology?
All genes of all the members of a population.
What is a Gene Pool?
random changes in a small population; a new population starts from a small group.
What is genetic drift: Founder Effect?
Alleles in a population don't change if, no mutations, no migrations, a large population, mating is random, and no natural selection.
What is the Hardy-Weinberg Therom?
1. Species change over time
2. Earth was very old
3. Struggle for existence with population growth
4.Fitness = Ability to survive
5. Artificial selection
6. Natural selection
What is Darwin's Theory?
Structures that have no apparent function but where once used by past ancestors.
What are Vegtigial Strucures.
Shows how many of each allele is found in the population.
What is Allele Frequency?
Organisms with better fitness are more likely to survive.
What is natural selection?
Study of similarities and differences in structures of different species.
What is Comparative Anatomy?