Bio 180 Exam 2 UW Questions With
100% Verified Answers
Hardy Weinburg 5 concepts -
correct answer ✅A large breeding population, Random mating, no
natural selection, no change in allele frequency or mutation, no
gene flow
HW Large population -
correct answer ✅A large population is necessary because genetic
drift will not have any effect, if the population is small the allele
frequencies would change
HW random mating -
correct answer ✅If mating is assortative then fewer heterozgote
individual's will be produced
HW No mutation -
correct answer ✅There needs to be no change in allele frequency
for the HW equilbrium to work so mutation must not be a factor
HW No gene flow -
correct answer ✅The population can not have new alleles coming
into and out of the population, this would greatly change the allele
frequency
,Bio 180 Exam 2 UW Questions With
100% Verified Answers
HW no NS -
correct answer ✅Natural Selection can't occur because then
certain alleles woulqd be selected for
Hardy Weinburg principle 2 Fundamental Claims -
correct answer ✅Frequencies of alleles in a population will be
constant generation after generation, when alleles are trasnmistted
via meiosis and random combination their frequencies do not
change over time. For evolution to occur another factor must
happen
Types of Natural Selection -
correct answer ✅Directional Selection, Stabilizing Selection,
Balancing Selection, Disruptive Selection
Directional Selection -
correct answer ✅Average phenotype of a population shifts in one
direction, Directional Selection tends to reduce genetic diversity,
given, enough time that allele will approach 1.0. Graph will shift in
one direction
Fixation -
correct answer ✅When an allele's frequency in a population is 1.0
, Bio 180 Exam 2 UW Questions With
100% Verified Answers
or 100%. The other allele is said to be lost at 0.0 or 0%, can occur
with directional selection
Purifying Selection -
correct answer ✅When disadvantageous alleles decline in
frequency
DS cliff swallows -
correct answer ✅Cliff swallows with larger body sizes survived a
harsh winter so only cliff swallows with large body sizes remained,
this shift is directional towards a large body size
Fitness trade-off -
correct answer ✅It's common that a directional selected trait is
counterbalanced by being disadvtangeous in another direction
Stabilizing Selection -
correct answer ✅No change in the average value of a trait
overtime and genetic variation is reduced. Individual's with extreme
traits have poor reproductive success. Graph will move towards the
average
100% Verified Answers
Hardy Weinburg 5 concepts -
correct answer ✅A large breeding population, Random mating, no
natural selection, no change in allele frequency or mutation, no
gene flow
HW Large population -
correct answer ✅A large population is necessary because genetic
drift will not have any effect, if the population is small the allele
frequencies would change
HW random mating -
correct answer ✅If mating is assortative then fewer heterozgote
individual's will be produced
HW No mutation -
correct answer ✅There needs to be no change in allele frequency
for the HW equilbrium to work so mutation must not be a factor
HW No gene flow -
correct answer ✅The population can not have new alleles coming
into and out of the population, this would greatly change the allele
frequency
,Bio 180 Exam 2 UW Questions With
100% Verified Answers
HW no NS -
correct answer ✅Natural Selection can't occur because then
certain alleles woulqd be selected for
Hardy Weinburg principle 2 Fundamental Claims -
correct answer ✅Frequencies of alleles in a population will be
constant generation after generation, when alleles are trasnmistted
via meiosis and random combination their frequencies do not
change over time. For evolution to occur another factor must
happen
Types of Natural Selection -
correct answer ✅Directional Selection, Stabilizing Selection,
Balancing Selection, Disruptive Selection
Directional Selection -
correct answer ✅Average phenotype of a population shifts in one
direction, Directional Selection tends to reduce genetic diversity,
given, enough time that allele will approach 1.0. Graph will shift in
one direction
Fixation -
correct answer ✅When an allele's frequency in a population is 1.0
, Bio 180 Exam 2 UW Questions With
100% Verified Answers
or 100%. The other allele is said to be lost at 0.0 or 0%, can occur
with directional selection
Purifying Selection -
correct answer ✅When disadvantageous alleles decline in
frequency
DS cliff swallows -
correct answer ✅Cliff swallows with larger body sizes survived a
harsh winter so only cliff swallows with large body sizes remained,
this shift is directional towards a large body size
Fitness trade-off -
correct answer ✅It's common that a directional selected trait is
counterbalanced by being disadvtangeous in another direction
Stabilizing Selection -
correct answer ✅No change in the average value of a trait
overtime and genetic variation is reduced. Individual's with extreme
traits have poor reproductive success. Graph will move towards the
average
