Biology 1407 Exam 1 Review Questions With Complete
Solutions
allopatric speciation Correct Answers when populations are
separated by a physical barrier
alloploidy Correct Answers combining chromosomes from two
species
analogous structure Correct Answers looks similar, different
function
archean eon Correct Answers early life
autoploidy Correct Answers chromosome duplication in a
single species
Biogeography Correct Answers deals with the geographical
distribution of plants and animals
bottleneck effect Correct Answers environmental conditions
that affect the genes that get passed on; only a small number of
individuals can survive
cambrian explosion Correct Answers rapid diversification of
life
cambrian period Correct Answers beginning of the paleozoic
era, cambrian explosion
, carboniferous period Correct Answers insects evolved wings;
land animals became more diverse
convergent evolution Correct Answers the independent
evolution of similar features in non related species
cretaceous period Correct Answers formation of modern
continents; dinosaurs and snakes; meteorite impact causes all
land animals larger than 25kg to become extinct
devonian period Correct Answers evolution of bony fish,
tetrapods and insects; seed plants appeared; mass extinction
from two meteorite impacts wiped out 75% of marine life
directional selection Correct Answers favors individual that
vary in one direction
disruptive selection Correct Answers very small and very big
make it through, and the average size decreases
formula for genotypes Correct Answers p^2 + 2pq + q^2
founder effect Correct Answers migration of individuals to a
new location
gene flow Correct Answers the movement of genes from one
location to another
genetic drift Correct Answers random changes in allele
frequencies
Solutions
allopatric speciation Correct Answers when populations are
separated by a physical barrier
alloploidy Correct Answers combining chromosomes from two
species
analogous structure Correct Answers looks similar, different
function
archean eon Correct Answers early life
autoploidy Correct Answers chromosome duplication in a
single species
Biogeography Correct Answers deals with the geographical
distribution of plants and animals
bottleneck effect Correct Answers environmental conditions
that affect the genes that get passed on; only a small number of
individuals can survive
cambrian explosion Correct Answers rapid diversification of
life
cambrian period Correct Answers beginning of the paleozoic
era, cambrian explosion
, carboniferous period Correct Answers insects evolved wings;
land animals became more diverse
convergent evolution Correct Answers the independent
evolution of similar features in non related species
cretaceous period Correct Answers formation of modern
continents; dinosaurs and snakes; meteorite impact causes all
land animals larger than 25kg to become extinct
devonian period Correct Answers evolution of bony fish,
tetrapods and insects; seed plants appeared; mass extinction
from two meteorite impacts wiped out 75% of marine life
directional selection Correct Answers favors individual that
vary in one direction
disruptive selection Correct Answers very small and very big
make it through, and the average size decreases
formula for genotypes Correct Answers p^2 + 2pq + q^2
founder effect Correct Answers migration of individuals to a
new location
gene flow Correct Answers the movement of genes from one
location to another
genetic drift Correct Answers random changes in allele
frequencies
