BIOLOGY 182 - ASU EXAM

Page |1


BIO 182 – ASU | ACTUAL EXAM |
QUESTIONS AND CORRECT ANSWERS

Adaptive plasticity -CORRECT ANSWER- one genotype has multiple phenotypes &
environments trigger change



Genetic drift -CORRECT ANSWER- evolution caused by random processes in
population in a population of finite size



Do smaller or larger populations have more chance for genetic drift? -CORRECT
ANSWER- smaller populations



Homology -CORRECT ANSWER- phenotype that is similar between two species
because of common ancestry



Homoplasy -CORRECT ANSWER- phenotype that is similar between two species
because of convergent evolution



Parsimony -CORRECT ANSWER- the simplest explanation is the best (fewest
evolutionary transitions) a-->b-->c = common a-->b-->a = uncommon



Migration load -CORRECT ANSWER- maintenance of deleterious alleles by
migration

, Page |2



Which traits are more informative? -CORRECT ANSWER- shared derived traits
(synapomorphy)



Which traits provide no information? -CORRECT ANSWER- shared ancestral traits
(pleisiomorphy)



Which traits provide false info? -CORRECT ANSWER- convergent traits
(homoplasy)



Allopatry -CORRECT ANSWER- populations occur in different places



Sympatry -CORRECT ANSWER- populations occur at the same place same time



Plasticity -CORRECT ANSWER- ability of one genotype to produce more than one
phenotype when exposed to different environments



Genetic drift can do what to neutral alleles -CORRECT ANSWER- eliminate &
spread



What random processes cause genetic drift? -CORRECT ANSWER- -independent
assortment of alleles
-random variation in survival
-random variation in mating success
-random variation in fecundity