Abundance Correct Answers The density of individuals
Adaptation Correct Answers Trials that increase individual
fitness in an environment
Adaptive radiation Correct Answers Evolution of several
diversified new species from one founding species
Allopatric populations Correct Answers Isolated from each
other by distance or a geographical barrier
Altruism (kin selection) Correct Answers Benefiting other
organisms at the cost of oneself
Altruistic altruism Correct Answers Only the recipient benefits
Amount of time for a 1% difference in DNA sequence is...
Correct Answers 5 to 6 million years
Anatomical homology Correct Answers Similarities in skeletal
bone structure
Animalia Correct Answers Multi-cellular heterotrophs
Archaea Correct Answers Prokaryotes within peptidoglycan
Assortative mating Correct Answers A preference to mate with
someone like oneself
, Background extinction rate Correct Answers The rate at which
species are lost through the normal evolutionary process
Bacteria Correct Answers Prokaryotes with peptidoglycan
Biodiversity Correct Answers An entire variety of living
organisms
Biodiversity Correct Answers The variety within and among
living species
Biogeography Correct Answers The distribution of species on
Earth
Biological evolution Correct Answers A change in the
characteristics of a biological population that occurs over the
course of generations
Biological populations Correct Answers Groups of individuals
of the same species
Biological species concept Correct Answers Species consist of
organisms that can interbreed and produce fertile offspring
Bottleneck effect Correct Answers A variant of founder effect;
a small subset survives after a disaster wipes out most of the
population
Carrying capacity Correct Answers The maximum population
that can be supported indefinitely in a given environment