UCSB EEMB 2 Final Exam 2025
COMPREHENSIVE EXAM QUESTIONS WITH
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Terms in this set (78)
the process by which different kinds of living
organisms are thought to have developed and
Evolution
diversified from earlier forms during the history of
the earth
-invertebrate zoology
-first comprehensive theory of evolution -
Lamarck use/disuse model (giraffes)
-inheritance of acquired characteristics
-importance of environments
"Principles of Geology"
-countless small changes occurring over vast
Lyell
periods of time, all according to known natural laws
-earth is ancient and develops slowly
Malthus -pop growth will always overtake the food supply
Cuvier comparative anatomy and extinction
-Allele and genotype frequencies in a population
Hardy-Weinberg
will remain constant from gen to gen in the absence
principle
of other evolutionary influences
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, 5/5/25, 2:10 PM UCSB EEMB 2 Final Exam 2025 COMPREHENSIVE EXAM QUESTIONS WITH DETAILED VERIFIED AND 100% CORRECT …
1. large breeding pop
2. random mating
To remain at H-W
3. no change in allele freq due to mutation
equilibrium
4. no immigration or emigration
5. no natural selection
general equation to freqB = p = (2N[BB] + N[Bb])/2N
calculate individual allele
frequencies in a two- *Bb will never be greater than 50%
allele system (H-W)
Effective population size size of population that can mate
mutual reinforcement occurs among biotic + abiotic
Extinction vortex
processes that drives a population to extinction
transfer of genetic variation from one pop to
Gene flow
another
accumulation of harmful mutations in a small pop -->
mutational metdown loss of fitness + decline in pop size
-caused by genetic drift
negative/positive neg: avoid mating with similar individuals
assortative mating pos: opposite ^
multiple alleles are maintained in the gene pool of a
population at frequencies higher than expected
from genetic drift alone
-could be due to heterozygote advantage,
balancing selection coevolutionary dynamics (other species exhibits a
common trait in first species), negative assort
mating, spatially (temporally fluctuating selection)
-leads to negative frequency - dependent selection:
allele more common decreases fitness
variation in phenotypic traits that can't be grouped
Continuous variation
into discrete categories (ex. weight, height, etc)
mode of natural selection, extreme phenotype
favored over others: causes allele frequency to shift
directional selection
over time
ex. dark moths when smog increases
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