BIO 182 EXAM 1 EXAM WITH CORRECT
QUESTIONS AND ANSWERS 2025
A) evolution - CORRECT-ANSWERSdescent with modification
B) natural selection - CORRECT-ANSWERSmechanism for change
C) genetic drift - CORRECT-ANSWERSrandom change in alleles
D) anatomical homologies - CORRECT-ANSWERSvariations on a structural theme that was
present in a common ancestor
E) speciation - CORRECT-ANSWERSthe process by which one species splits into two or
more species
F) microevolution - CORRECT-ANSWERSchanges in allele frequencies within a population
G) macroevolution - CORRECT-ANSWERSthe broad pattern of evolution over time
H) species - CORRECT-ANSWERStaxonomic group whose members can interbreed
I) reproductive isolation - CORRECT-ANSWERSthe existence of biological barriers that
prevent members of two species from producing viable, fertile hybrids
J) hybrid - CORRECT-ANSWERSan organism that is the offspring of genetically dissimilar
parents or stock
K) prezygotic barriers - CORRECT-ANSWERSprevents fertilization between species
, L) habitat isolation - CORRECT-ANSWERSorganisms that use different habitats are unlikely
to encounter each other and mate
M) behavioral isolation - CORRECT-ANSWERSspecies use unique and elaborate behaviors to
attract mates thus isolating other species
N) temporal isolation - CORRECT-ANSWERStwo species that breed at different times of day,
season, or year are unlikely to encounter each other and mate
O) mechanical isolation - CORRECT-ANSWERSclosely related species cannot mate because
of incompatible bodies
P) gametic isolation - CORRECT-ANSWERSgametes of two species do not form a zygote
because of incompatibilities preventing fertilization
Q) postzygotic barriers - CORRECT-ANSWERSprevents hybrid zygotes from developing into
viable, fertile adults
R) reduced hybrid viability - CORRECT-ANSWERSgenetic incompatibility between two
species may abort the hybrid embryo
S) reduced hybrid fertility - CORRECT-ANSWERSeven if a hybrid develops into a healthy,
strong adult, it may be infertile
T) hybrid breakdown - CORRECT-ANSWERSfirst-generation hybrids are viable and fertile
but when they mate with either parent species, the next generation is feeble or sterile
QUESTIONS AND ANSWERS 2025
A) evolution - CORRECT-ANSWERSdescent with modification
B) natural selection - CORRECT-ANSWERSmechanism for change
C) genetic drift - CORRECT-ANSWERSrandom change in alleles
D) anatomical homologies - CORRECT-ANSWERSvariations on a structural theme that was
present in a common ancestor
E) speciation - CORRECT-ANSWERSthe process by which one species splits into two or
more species
F) microevolution - CORRECT-ANSWERSchanges in allele frequencies within a population
G) macroevolution - CORRECT-ANSWERSthe broad pattern of evolution over time
H) species - CORRECT-ANSWERStaxonomic group whose members can interbreed
I) reproductive isolation - CORRECT-ANSWERSthe existence of biological barriers that
prevent members of two species from producing viable, fertile hybrids
J) hybrid - CORRECT-ANSWERSan organism that is the offspring of genetically dissimilar
parents or stock
K) prezygotic barriers - CORRECT-ANSWERSprevents fertilization between species
, L) habitat isolation - CORRECT-ANSWERSorganisms that use different habitats are unlikely
to encounter each other and mate
M) behavioral isolation - CORRECT-ANSWERSspecies use unique and elaborate behaviors to
attract mates thus isolating other species
N) temporal isolation - CORRECT-ANSWERStwo species that breed at different times of day,
season, or year are unlikely to encounter each other and mate
O) mechanical isolation - CORRECT-ANSWERSclosely related species cannot mate because
of incompatible bodies
P) gametic isolation - CORRECT-ANSWERSgametes of two species do not form a zygote
because of incompatibilities preventing fertilization
Q) postzygotic barriers - CORRECT-ANSWERSprevents hybrid zygotes from developing into
viable, fertile adults
R) reduced hybrid viability - CORRECT-ANSWERSgenetic incompatibility between two
species may abort the hybrid embryo
S) reduced hybrid fertility - CORRECT-ANSWERSeven if a hybrid develops into a healthy,
strong adult, it may be infertile
T) hybrid breakdown - CORRECT-ANSWERSfirst-generation hybrids are viable and fertile
but when they mate with either parent species, the next generation is feeble or sterile
