Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
16 Cards in this Set
- Front
- Back
Briefly define evolution |
Genetic change in a population of organisms through time |
|
Briefly define natural selection |
Survival and reproduction of the fittest |
|
The genetic makeup of a population (described in terms of gene/allele frequencies) is the |
Gene Pool |
|
List the 5 conditions that must exist within a population in order for a “Hardy-Weinberg Equilibrium” to exist |
No mutation No migration Random mating Large population No natural selection |
|
Use your understanding of the Hardy-Weinberg Law to determine the frequency of heterozygous individuals for the following gene with the two alleles A and B |
0.9^2+(0.9)(0.1)+0.1^2 |
|
Briefly describe assortative mating (in respect to nonrandom patterns of mate selection): |
Type of nonrandom mating in which phenotypically similar individuals mate more frequently |
|
Briefly define coevolution: |
Simultaneous development of adaptations in 2+ populations |
|
How does diffuse coevolution differ from a coevolved pair? |
Diffuse coevolution: Multiple interacting lineages that have influenced one another in some reciprocal manner (safer, more general) Coevolved pair: Involves 2 species (ex: Special orchid w/wasps) |
|
What is genetic drift? |
Change in allelic frequencies within a population by chance |
|
Briefly describe the Founder Effect: |
Allelic frequencies are determined by founders |
|
What is a Genetic Bottleneck? |
Sharp reduction in size of population due to environmental events (floods fire, ect) |
|
Directional selection: |
Eliminates one extreme |
|
disruptive selection: |
Eliminates the intermediate |
|
stabilizing selection |
Eliminates both extremes |
|
Does genetic drift increase or decrease the diversity of a population? |
Decrease |
|
Does geneflow increase or decrease the diversity of a population? |
Increase |