bio 272 exam 3 with complete solutions
Speciation - Correct Answers -the formation and evolution of new species
reproductive isolation - Correct Answers -separation of a species or population so that
they no longer interbreed and evolve into two separate species
allopatric speciation - Correct Answers -the formation of new species in populations that
are geographically isolated from one another
sympatric speciation - Correct Answers -The formation of new species in populations
that live in the same geographic area
-different hosts/food sources within the same range
if hox genes control where structures are formed along the body, - Correct Answers -we
should see differences in expression in animals with different arrangement of parts
dorso-ventral axis - Correct Answers -The axis in bilateral symmetry that defines the top
of an organism from the bottom
premating prezygotic barriers - Correct Answers -features that impede transfer of
gametes to members of other species
-behavior, incompatibility of genitalia, timing of reproduction
postmating prezygotic mechanisms - Correct Answers -gamete incompatibility
postzygotic mechanism - Correct Answers -a reproductive isolating mechanism that
prevents maturation and reproduction in offspring from interspecies reproduction
-hybrid sterility
-hybrids less fit
adaptive radiation - Correct Answers -the diversification of a group of organisms into
forms filling different ecological niches
convergent evolution - Correct Answers -Process by which unrelated organisms
independently evolve similarities when adapting to similar environments
what is "fitness" - Correct Answers -average contribution of a genotype to the next
generation of offspring
selection can - Correct Answers -reveal more variation than is apparent without
Speciation - Correct Answers -the formation and evolution of new species
reproductive isolation - Correct Answers -separation of a species or population so that
they no longer interbreed and evolve into two separate species
allopatric speciation - Correct Answers -the formation of new species in populations that
are geographically isolated from one another
sympatric speciation - Correct Answers -The formation of new species in populations
that live in the same geographic area
-different hosts/food sources within the same range
if hox genes control where structures are formed along the body, - Correct Answers -we
should see differences in expression in animals with different arrangement of parts
dorso-ventral axis - Correct Answers -The axis in bilateral symmetry that defines the top
of an organism from the bottom
premating prezygotic barriers - Correct Answers -features that impede transfer of
gametes to members of other species
-behavior, incompatibility of genitalia, timing of reproduction
postmating prezygotic mechanisms - Correct Answers -gamete incompatibility
postzygotic mechanism - Correct Answers -a reproductive isolating mechanism that
prevents maturation and reproduction in offspring from interspecies reproduction
-hybrid sterility
-hybrids less fit
adaptive radiation - Correct Answers -the diversification of a group of organisms into
forms filling different ecological niches
convergent evolution - Correct Answers -Process by which unrelated organisms
independently evolve similarities when adapting to similar environments
what is "fitness" - Correct Answers -average contribution of a genotype to the next
generation of offspring
selection can - Correct Answers -reveal more variation than is apparent without
