Units 4,6 Flashcards
Define Mutations
Raw material for evolutionary change
Define Genetic drift
Change in the frequencies of alleles in a population
Define Founder effects
A few individuals from a population start a new population with different allele frequency than the original population
Founder effects can lead to what (2 things)
1) Genetic drift
2) Sink population dynamics if gene flow is shut off
Define Migration
Movement of animals between populations (birds)
Define Gene flow
The transfer of genes from one pool of a population to another
Define Conservation applications
Gene flow and small populations promoting genetic diversity across subpopulations
What is the name for the conservation application being used
Wildlife corridors
Define Translocation
Taking an animal from one location and another animal of the same species and putting them together
Define Wildlife corridors
Physical connections between areas to help promote gene flow/ diversity
Define Directional selection
Allele frequencies give rise to a range of variation in phenotype
Define Stabilizing selection
Intermediate forms of a trait in a population are favored and alleles for the extreme are not
Define Disruptive selection
Forms at both ends of the range of variation are favored and intermediate forms are selected against
What are the two levels of analysis
1) Proximate causation
2) Ultimate causation
What level of analysis is on Proximate causation
What type of question is this
1) Mechanisms: Physiological, Cognitive
2) Ontogenetic processes
3) How questions
