Part 6 Struggle for Existence
A model whose outcome is completely determined by the starting conditions and fixed parameters
What is a deterministic model?
Proposes no relationship between the factor being studied and the observed phenomenon
What is a null hypothesis?
When mating takes place at random with respect to the gene under consideration.
What is random mating?
Members of populations facilitating each other’s survival and reproduction, instead of harming each other through intraspecific competition.
What is the Allee Effect?
Tentative answer to the question stemming from observations.
States that one or more factors influence the observed phenomenon.
Worded in a way that proposes a relationship between one or more factors and the observed phenomenon
What is a hypothesis?
The Hardy-Weinberg Equation.
What is p2 + 2pq + q2?
The probability that an individual is still alive at age x
What is lx? / What is a survivorship schedule?
The factor that is expected to be affected by the researcher’s manipulation.
What is a dependent variable?
Change in allele frequency within a population that occurs purely as a result of chance
What is genetic drift?
The gradual degradation of functional characteristics.
Hint: The generalized breakdown of old organisms?
What is senescence?
An approach that utilizes naturally occurring variation to investigate the effect of one factor on another. Nothing about the system is actually being altered.
What is a correlational study?
1.The population is large enough to be unaffected by random gene changes.
2.There is no gene flow.
3.No mutations occur or there is mutational equilibrium.
4.Reproduction is random.
5.Natural selection is not acting on a particular phenotype.
When does Hardy-Weinberg/genetic equilibrium occur?