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BIO 182 EXAM 2 ASU QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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BIO 182 EXAM 2 ASU QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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BIO 182 EXAM 2 ASU QUESTIONS ANDANSWERS WITH SOLUTIONS 2024
niche - ANSWER range of environmental conditions in which a genotype can persist
abiotic - ANSWER physical conditions
biotic - ANSWER other organisms
which are the strongest bonds - ANSWER covalent bonds
low temps - ANSWER more flexible enzymes
high temps - ANSWER more rigid enzymes
Do enzymes maintain a rigid structure while catalyzing? - ANSWER No it is constantly changing
adaptive plasticity - ANSWER one genotype has multiple phenotypes & environments trigger change
genetic drift - 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? - ANSWER Smaller populations
homology - ANSWER phenotype that is similar between two species because of common ancestry
homoplasy - ANSWER phenotype that is similar between two species because of convergent evolution
parsimony - ANSWER the simplest explanation is the best (fewest evolutionary transitions) A-->B-->C =
common A-->B-->A = uncommon
, migration load - ANSWER maintenance of deleterious alleles by migration
Which traits are more informative? - ANSWER Shared derived traits (synapomorphy)
Which traits provide no information? - ANSWER Shared ancestral traits (pleisiomorphy)
Which traits provide false info? - ANSWER Convergent traits (homoplasy)
allopatry - ANSWER populations occur in different places
sympatry - ANSWER populations occur at the same place same time
plasticity - ANSWER ability of one genotype to produce more than one phenotype when exposed to
different environments
Genetic drift can do what to neutral alleles - ANSWER eliminate & spread
What random processes cause genetic drift? - ANSWER -independent assortment of alleles
-random variation in survival
-random variation in mating success
-random variation in fecundity
Is fixation of a deleterious allele or the loss of a beneficial allele more probable? - ANSWER Loss of a
beneficial allele
Fisher's Model - ANSWER Assume:
Each set of parents give birth to two offspring.
A new allele (a) arises, which has no effect on fitness
(fitness of Aa = fitness of AA).
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