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ANTH 214
Midterm Chapter 4 Key Terms
14
Anthropology
Undergraduate 2
10/16/2013

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Term
bottleneck
Definition
A severe reduction in the size of a population or the founding of a new population by a small percentage of the parent population that results in only some genes surviving and characterizing the descendant population.
Term
breeding populations
Definition
Populations within a species that are genetically isolated to some degree from other populations.
Term
chromosomal mutations
Definition
Mutations of a whole chromosome or a large portion of a chromosome
Term
fission
Definition
process of evolution that involves the splitting up of a population to form new populations.
Term
founder effect
Definition
A process of evolution. Genetic differences between populations produced by the fact that genetically different individuals established (founded) those populations.
Term
gamete sampling
Definition
A process of evolution. The genetic change caused when genes are passed to new generations in percentages unrepresentative of those of the parental generation. An example of sampling error.
Term
gene flow
Definition
A process of evolution that involves the exchange of genes among populations through interbreeding.
Term
gene pool
Definition
all alleles in a population
Term
point mutations
Definition
Mutations of a single base of a codon. The mutation that causes sickle cell anemia is an example.
Term
sampling error
Definition
When a sample chosen for study does not accurately represent the population from which the sample was taken.
Term
taxonomists
Definition
Scientists who classify and name living organisms.
Term
If one population is drawn from a small sample of a parental population such that the genetic variation changes, this is called
Definition
Founder Effect
Term
Which two forces of evolution increases genetic variation within a population?
Definition
Gene flow & Mutation
Term
Mutations in the genetic code are what?
Definition
maldadaptive
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