Bio 446 - Exam One Clicker Questions and Correct Answers
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Bio 446
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Bio 446
What statement best describes use of the term adaptation in biology? A) Word used to describe a trait or character B) Word used to describe an evolutionary process C) Word used to describe a process of phenotypic adjustment within individuals D) Any of the above D) Any of the above
What is biologi...
Bio 446 - Exam One Clicker Questions
and Correct Answers
What statement best describes use of the term adaptation in biology?
A) Word used to describe a trait or character
B) Word used to describe an evolutionary process
C) Word used to describe a process of phenotypic adjustment within individuals
D) Any of the above ✅D) Any of the above
What is biological fitness?
A) The condition of being physically fit and healthy
B) The quality of being suitable to fulfill a particular role or task
C) Relative genetic contribution of an individual to the gene pool of the next
generation(s)
D) Measure of the number of an individual's offspring that survive to reproductive age in
a particular environment
E) Competency to serve in political office ✅C) Relative genetic contribution of an
individual to the gene pool of the next generation(s)
Which of the following is not a human phenotype that enhances fitness?
A) Skin color
B) Wisdom teeth
C) Bipedalism
D) Large and complex brain (i.e., capacity to learn)
E) Ability to eat a wide range of food types (i.e., generalist, omnivorous) ✅B) Wisdom
teeth
What is a biological adaptation?
A) Movie based on a book or play
B) Distinct variant of a phenotype that arose historically via natural selection to enhance
fitness of an organism in its current environment
C) Process that brings about an increasingly good, heritable fit between organism and
environment
D) Non-heritable phenotypic change within an individual
E) None of the above ✅B) Distinct variant of a phenotype that arose historically via
natural selection to enhance fitness of an organism in its current environment
Choose the best approaches for studying adaptation from those listed.
A) Separating adaptation from selection
B) Characterizing the functional effects of genetic variants
C) Looking for genes that influence multiple, seemingly unrelated traits (i.e., pleiotropy)
D) Determining if the presence/absence of an allele affects fitness
E) Answers B and D ✅E) Answers B and D
, What is alcohol dehydrogenase?
A) Enzyme that facilitates the interconversion of alcohols to aldehydes or ketones
B) Enzyme that catalyze the oxidation of aldehydes to carboxylic acids
C) Enzyme that detoxifies ethanol
D) Used in Star Trek to prevent alcohol intoxication
E) Answers A and C ✅E) Answers A and C
Why would Drosophila need AHD?
A) "To party like its 1999"
B) For the detoxification of ethanol
C) Synthesize sex pheromone
D) To feed on rotting and fermenting fruit
E) Answer B so it can do answer D ✅E) Answer B so it can do answer D
What is genetic drift?
A) Non random fluctuations in the frequency of gene variants (alleles) in a population
B) A 1950s R&B/soul vocal group
C) A way to obtain an adaptation that increases fitness
D) Random fluctuations in the frequency of gene variants (alleles) in a population
E) Transfer of alleles of genes from one population to another ✅D) Random
fluctuations in the frequency of gene variants (alleles) in a population
Use information in the figure on the right to answer the following: How might the cline in
ADH allele frequency respond to climate change (e.g. warming)?
A) Frequency of the ADHS allele increases relative to the ADHF allele
B) Frequency of the ADHF allele increases relative to the ADHS allele
C) Frequency of the ADHF allele does not change relative to the ADHS allele
D) No change in the frequency of either allele
E) Decrease in the frequency of both alleles ✅A) Frequency of the ADHS allele
increases relative to the ADHF allele
What is lactate dehydrogenase (LDH or LD)?
A) Enzyme in the glycolysis pathway
B) Enzyme that converts pyrrhic acid to lactic acid and back
C) Answers A and B
D) Enzyme that causes muscle fatigue
E) None of the above answers ✅C) Answers A and B
Use the information in the figure on the right to answer the following: what genotype has
the highest catalytic activity at low temperatures?
A) LDH-Bb (homozygote)
B) LDH-Ba/Bb (heterozygote)
C) LDH-Ba (homozygote)
D) None of them ✅D) None of them
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