Population Genetics Flashcards
(24 cards)
These are a group of individuals who share a common set of genes and live in the same geographic area.
Population
These are a set of all genes in a particular population or species.
Gene Pool
This concerns with the genetic traits in large numbers of people and follows the Hardy-Weinberg principle.
Population Genetics
These are the three genotype frequencies in a population.
- Homozygous Dominant
- Homozygous Recessive
- Heterozygous
These are the two allele frequencies.
Dominant and Recessive
This describes the frequency of occurrence or proportions of different alleles of a particular gene in a given population.
Allele Frequency
The formula for allele frequency.
Allele Frequency = # of copies of a specific allele / total # of every allele in the gene pool
This describes the proportion of a population with regards to their genotype divided by the entirety of a population.
Genotype Frequency
These are the three types of genotype frequencies.
- p2 (Homozygous D)
- q2 (Homozygous R)
- 2pq (Heterozygous)
This principle states that allele and genotype frequencies will remain constant from generation to generation given there is an absence of evolutionary influences.
Hardy-Weinberg Principle
This is the formula for allele frequency.
p + q = 1
This is the formula for genotype frequency.
p2 + 2pq + q2 = 1
This is the sum of all possible outcomes.
1
This where the problem lies and is considered the key to Hardy-Weinberg problems.
Homozygous Recessive
These are the 4 factors that can be observed in a population that drives evolution.
- Selection
- Migration
- Mutation
- Genetic Drift
This factor can be a major force driving allele frequency change and leads to adaptation.
Selection
This factor creates new alleles in a gene pool.
Mutation
This factor is the gene flow from other populations that can alter allele frequencies.
Migration
This factor causes random changes in allele frequency especially in small populations.
Genetic Drift
This is the end product of all factors that contributes to genetic variation.
Evolution
This is the origin of new capabilities in populations by means of spontaneous heritable changes in genes.
Mutation
This is the gene flow and described as the movement of organisms among subpopulations within larger population.
Migration
This is the result of different abilities of an organism to survive and reproduce in their environment as well as the primary process on how organisms progressively become better adapted to their environment.
Natural Selection
This is a product of a random change in allele frequency. This is especially impactful in small populations.
Random Genetic Drift