ASU BIO 320 2025 EXAM 2

ASU BIO 320 2025
EXAM 2
Darwin used the term "natural" selection, which he chose in contrast
to _____.

a) neutral selection

b) directional selection

c) artificial selection

d) stabilizing selection - CORRECT REPLY>>>>>>-c) artificial
selection



The Hardy-Weinberg Principle helps identify evolutionary forces that
can change gene frequencies in populations. This model assumes
each of the following except:

a) random mating

b) random mutations

c) large population size

d) no immigration

e) similar fitness among genotypes - CORRECT REPLY>>>>>>-b)
random mutations

, Clausen, Keck and Hiesey used a _____ experimental design.

a) common garden

b) reciprocal transplant

c) laboratory-based

d) greenhouse-based - CORRECT REPLY>>>>>>-a) common
garden



Briefly, the logic motivating a common garden experimental

design is: A similar environment means that differences in

phenotypes are not due to environment variation. Hence any

differences in phenotypic traits will be due to differences in

genotype.

a) True

b) False - CORRECT REPLY>>>>>>-a) True



To be considered different ecotypes, two populations must differ in:

a) the amount of phenotypic plasticity they exhibit.

b) their genotypes which in turn causes differences in the
adaptations found in each population. - CORRECT