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;
17 Cards in this Set
- Front
- Back
What is the gene pool?
|
The collection of all the genes in a specific population.
|
|
What is the founder effect?
|
The difference in genetic frequencies between a small breakway population and the original population.
|
|
What is stabilizing selection?
|
A process whereby nature selects for intermediate phenotypes.
|
|
What is sexual selection?
|
A process whereby nature selects based entirely on traits used only for reproduction and not for survival.
|
|
What is natural selection?
|
Nature selects organisms for reproduction that are fit to survive.
|
|
What is genetic drift?
|
The random change of genotype frequencies.
|
|
What is gene flow?
|
The altering of genetic frequencies by the introduction of specimens from another population.
|
|
What is diversifying selection?
|
A process whereby nature selects for extreme phenotypes.
|
|
What is directional selection?
|
A process whereby nature prefers one allele over another. Can lead to the elimination of an allele over time.
|
|
Allele
|
a distinct form of a gene:usually two per trait(one from each parent)
|
|
Dihybrid Cross
|
a cross that involves two pairs of genetic traits
|
|
Gene
|
a section of DNA on a chromosome that codes for a trait
|
|
Gene Pool
|
The available alleles in one's environment
|
|
Genetic Drift
|
a change in the Gene Pool due to random mating, no immigration of males, no emigration of females, long periods of time
|
|
Monohybrid Cross
|
a cross that involes only one pair of genetic traits
|
|
What are the effects of inbreeding?
|
Increase in homozygous offspring.
|
|
What are the five main causes of microevolution?
|
Genetic drift, gene flow, mutation, nonrandom mating, and natural selection.
|