MICROEVOLUTION p.2. Flashcards
This is a single homogenous pools of gene.
Population
- This assumption states that every individual is equally likely to mate or interact with every other and that all individuals experience the same conditions.
- A population that adheres to this is called a ____________.
- Panmixis
- Panmictic population
A population that deviates from ideal panmixis assumption.
Structured population
T or F: Any question about evolution depend on population structure.
True. Questions such as ‘do species adapt to local environments?’ or ‘can a single population split into separate species?’.
Among organisms with limited dispersal abilities, these structures can be observed.
Spatial structures
How do allele frequencies act in line with spatial patterns?
They vary depending on the spatial pattern observed.
_______ are a change in space of a trait mean or an allele frequency.
Clines
T or F: Genes will lead to a heterogenous population.
False. They make the population homogenous in time.
What effects does gene flow have?
- a. equalizes allele frequency
- b. introduces new alleles into a population
Gene flow happens due to ______, which is the movement of individuals and gametes.
Dispersal
Tells us how quickly gene flow erodes genetic differences between populations.
Migration rate
Define the following:
- large focal population or main source of migrants
- migrants/local populations that come from the mainland population
- migrants come from a pool of migrants contributed by small populations
- mainland population
- deme
- metapopulation
______ is a statistic used to measure genetic differences between two or more populations
Fixation index
T or F: In isolation by distance, the fixation index increases when the distance between pairs increases.
True
The most basic source of randomness comes from _______ ________.
individual reproduction
