BIOL 133 Week 15 Quiz | Assignment Help | APUS
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BIOL 133 Week 15 Quiz | Assignment Help | APUS
Week 15 Quiz
Question 1 of 10
A group of birds migrate to a newly formed island and
have a genetic makeup that is different from the original population. This is
known as ________?
o
phenotype frequency
o
allelic variation
o
the founder effect
o
the modern synthesis
o
hybrid mutation
Question 2 of 10
In South America, there is a specific type of frog
where the male uses a loud call in order to attract females, even though this
makes him more likely to be found by a predator. This is an example of
o
gene flow
o
stabilizing selection
o
the handicap principle
o
sexual dimorphism
Question 3 of 10
Cheetahs, once hunted to near extinction, are now
protected and recovering, although the number of different alleles at 5
different loci has dropped from 28 to 16. This is an example of ________.
o
reduced mutational activity
o
allelic stabilization
o
gene flow
o
a bottleneck
Question 4 of 10
What does the term 2pq represent in the Hardy-Weinberg
principle?
o
the frequency of the homozygous dominant
individuals in the population
o
the frequency of the heterozygous
individuals in the population
o
the frequency of the homozygous recessive
individuals in the population
o
the frequency of the recessive allele in
the population
Question 5 of 10
If alleles that cause disease are constantly being
selected against, why would there be any disease-causing alleles in a
population over generations?
o
natural mutations would be happening at a
constant, low level
o
to be used as surveillance for any new
disease-causing organisms
o
the bad alleles would eventually all
disappear
o
some bad alleles would have to remain to
prevent overpopulation
What is the only way to introduce a new allele into a
species?
o
migration
o
natural selection
o
genetic drift
o
mutation
Question 7 of 10
Although Lamarck’s idea of inheritance of acquired
characteristics was demonstrated to be false, there is a way in which exposure
to some environmental factors can be passed on to offspring. This is known as
o
stabilizing polymorphisms
o
acquired mutability
o
environmental heritability
o
epigenetics
The accumulation of mutations in a population over
generations leads to
o
nonrandom mating
o
extinction
o
decreased variability
o
evolution
Question 9 of 10
The fact that being homozygous recessive for the CCR5
receptor protects people from being infected with HIV, thus causing an increase
in the recessive CCR5 allele, is an example of
o
microevolution
o
founder effect
o
macroevolution
o
allele switching
Question 10 of 10
Population bottlenecks and founder effects
o
both result in genetic variation due to
extreme conditions
o
both result in an increased mutation rate
in the population
o
have opposite effects on population
variation
o
both lead to genetic drift, which reduces
variation in the population
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