Gene flow tends to increase or decrease diversity among populations?
decrease
100
Which two effects exaggerate genetic drift?
bottleneck and founder effect
100
Who said that species evolve with time and suggestsed that natural selection was the process by which they become adapted to their environment?
Charles Darwin
100
What is a species?
A group of organisms that share physical trais, interbreed, and have a shared gene pool - each species is reproductively isolated from every other species
200
What are three of the five conditions that must be met for the Hardy-Weinberg law to be true.
No mutations
No gene flow
Random mating
No genetic drift
No selection
200
The movement of alleles among populations by the migration of breeding individuals
What is gene flow
200
___________________ refers to changes in allele frequencies of a gene pool due to drift
Genetic drift
200
What is variation (when talking about evolution)?
the members of a population must differ from one another
200
What is taxonomy?
The branch of biology concered with identifying and naming organisms
300
Which of the four causes of evolution results in adaptation to the environment?
Natural Selection
300
Gene flow among populations can prevent _______________ from occuring.
Speciation
300
What is the founder effect?
Rare alleles or combinations of alleles occurs at a higher frequency in a population isolated from the general population
300
Biotic environment includes organisms organisms that seek resources through _________________, _______________, and _______________.
competition, predation, and parasitism
300
Who developed the binomial system of naming species?
There is constant gene flow between adjacent animal populations due to the ________________ of organisms.
migration
400
What is the bottleneck effect?
creased by the survivors of a population after a natural disaster or habitat loss
400
What is differential adaptedness?
differences in a population affect how well an organism is adapted to its environment
400
What is systematics?
The study of the diversity of organisms at all levels of organization
500
What law states that an equilibrium of allele frequencies in a gene pool will remain in effect in each succeeding in generation of a sexually reproducing population?
The Hardy-Weinberg law
500
What is speciation?
Evolutionary process by which new biological species arise
500
Genetic drift is ________________ (random/not random) and therefore, it is _______________ (likely/not likely) to produce the same results in several populations.
random
not likely
500
What four things are required for evolution by natural selection?