Bio 1233 Exam 3 Part 1

Front 1

A phenomenon by which genetic drift can occur; a sudden reduction in population size (often due to famine, disease, or rapid environmental disturbance) that can lead to changes in allele frequencies of a population.

Back 1

Bottleneck Effect

Front 2

A mechanism of evolution that occurs when there is heritable variation for a trait and individuals with one version of the trait have greater reproductive success than individuals with a different version of that trait

Back 2

Natural Selection

Front 3

The point at which the frequency of an allele in a population is 100% and, therefore, there is no more variation in the population for this gene

Back 3

Fixation

Front 4

The transmission of traits from parents to offspring via genetic information; also known as heritability

Back 4

Inheritance

Front 5

A random change in allele frequencies over successive generations; a cause of evolution

Back 5

Genetic Drift

Front 6

The situation in which individuals have greater reproductive success than other individuals in a population

Back 6

Differential Reproductive Success

Front 7

A change in the allele frequencies of a population due to movement of some individuals of a species from one population to another, changing the allele frequencies of the population they join; also known as migration

Back 7

Gene Flow

Front 8

A phenomenon by which genetic drift can occur; the isolation of a small subgroup of a larger population which can lead to changes in the allele frequencies of a population because all the descendants of the smaller group will reflect the allele frequencies of the subgroup, which may be different from those of the larger source population.

Back 8

Founder Effect

Front 9

The process by which natural selection favors traits, such as ornaments or fighting behavior, that give an advantage to individuals of one sec in attracting mating partners.

Back 9

Sexual Selection

Front 10

The transmission of traits from parents to offspring via genetic information; also known as inheritance.

Back 10

Heritability

Front 11

Any characteristic or feature of an organism, such as red petal color in a flower.

Back 11

Trait

Front 12

A group of organisms of the same species living in a particular geographic region.

Back 12

Population

Front 13

An alternation in the base-pair sequence of an individual's DNA; may arise spontaneously or following exposure to a mutagen.

Back 13

Mutation

Front 14

A change in the allele frequencies of a population due to the movement of some individuals from one population to another.

Back 14

Migration

Front 15

A change in allele frequencies of a population.

Back 15

Evolution