Zoology - pop quiz

:p

Genetic Variation

differences between individuals based of genetics. comes from mutations, reproduction changes, and chromosomal change

Population

group of the same species in the same area and interbreed (breed with one another)

Allele frequency

P(dominant allele) + Q(recessive allele) = 1??

means that if there are no changes in population

Macroevolution

Large changes caused by gradual build up of changes. results in new species.

Microevolution

small-scale evolutionary changes that occur within a population over time. Usually happens over short periods of time, frequently on islands.

Genetic drift

Unpredictable change in population, like if a tornado took out 3 out of 4 brown sheep, and there was only 5 black sheep and 1 brown sheep.

Gene Flow

movement of organisms in and out of a population. often called migration

Natural selection

Darwins theory on how species adapt to changing enviorments. often based on phenotype not genotype.

Phenotype

physical characteristics of an organism

Genotype

Genetic information about an organism

Evidence for evolution

vestigial structures

Functions in the body that no longer serve a purpose for the organism, but did for their common ancestor.