BSC 1005 Lowell Exam 4 UPDATED
ACTUAL Exam Questions and CORRECT
Answers
What is a population? - CORRECT ANSWER - A group of individuals of the same species
that live in the same area
When does a population evolve? - CORRECT ANSWER - When some traits are favored
over others
What does "allele frequency" refer to? - CORRECT ANSWER - The frequency of
adaptable alleles
What leads to evolution? - CORRECT ANSWER - A change in allele frequency
What is an organism's "fitness"? - CORRECT ANSWER - An organism's ability to survive
and reproduce in a particular environment
A higher fitness leads to the _________ likelihood of alleles being passed down to the next
generation - CORRECT ANSWER - Increased
An organism's alleles, or genotype, determine its _________ - CORRECT ANSWER -
Phenotype
What is natural selection? - CORRECT ANSWER - Differential survival & reproduction
of individuals within a population
Natural selection occurs in response to what? - CORRECT ANSWER - Environmental
pressure
, True or False: Individuals, NOT populations, evolve - CORRECT ANSWER - False
Populations experience changes in ______ _________ over time - CORRECT ANSWER -
Allele frequency
How many different patterns of natural selection are there? - CORRECT ANSWER -
Three
What is directional selection? - CORRECT ANSWER - Predominant phenotypes near one
end of the spectrum
What is stabilizing selection? - CORRECT ANSWER - Predominant phenotypes near the
middle of the spectrum
What is diversifying selection? - CORRECT ANSWER - Predominant phenotypes are at
both ends of the spectrum
What are antibiotics? - CORRECT ANSWER - Chemicals that kill bacteria
What is antibiotic resistance? - CORRECT ANSWER - The ability of a microorganism to
withstand the effects of an antibiotic
How does bacteria reproduce? - CORRECT ANSWER - Binary fission
Is binary fission sexual or asexual reproduction? - CORRECT ANSWER - Asexual
Antibiotic-resistant bacteria kill over _____ people in the US each year - CORRECT
ANSWER - 23,000
ACTUAL Exam Questions and CORRECT
Answers
What is a population? - CORRECT ANSWER - A group of individuals of the same species
that live in the same area
When does a population evolve? - CORRECT ANSWER - When some traits are favored
over others
What does "allele frequency" refer to? - CORRECT ANSWER - The frequency of
adaptable alleles
What leads to evolution? - CORRECT ANSWER - A change in allele frequency
What is an organism's "fitness"? - CORRECT ANSWER - An organism's ability to survive
and reproduce in a particular environment
A higher fitness leads to the _________ likelihood of alleles being passed down to the next
generation - CORRECT ANSWER - Increased
An organism's alleles, or genotype, determine its _________ - CORRECT ANSWER -
Phenotype
What is natural selection? - CORRECT ANSWER - Differential survival & reproduction
of individuals within a population
Natural selection occurs in response to what? - CORRECT ANSWER - Environmental
pressure
, True or False: Individuals, NOT populations, evolve - CORRECT ANSWER - False
Populations experience changes in ______ _________ over time - CORRECT ANSWER -
Allele frequency
How many different patterns of natural selection are there? - CORRECT ANSWER -
Three
What is directional selection? - CORRECT ANSWER - Predominant phenotypes near one
end of the spectrum
What is stabilizing selection? - CORRECT ANSWER - Predominant phenotypes near the
middle of the spectrum
What is diversifying selection? - CORRECT ANSWER - Predominant phenotypes are at
both ends of the spectrum
What are antibiotics? - CORRECT ANSWER - Chemicals that kill bacteria
What is antibiotic resistance? - CORRECT ANSWER - The ability of a microorganism to
withstand the effects of an antibiotic
How does bacteria reproduce? - CORRECT ANSWER - Binary fission
Is binary fission sexual or asexual reproduction? - CORRECT ANSWER - Asexual
Antibiotic-resistant bacteria kill over _____ people in the US each year - CORRECT
ANSWER - 23,000
