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LSU BIOL 1202 - Exam 1
(Pomarico) Questions with
Detailed Verified Answers
True or False: FOSSILS were used to SUPPORT evolution Ans: False
Who placed fossils in an evolutionary context? Ans: Lamarck
Lamarck's mechanism of change principle states that _______ traits can be
passed along to the next generation Ans: Acquired
Darwin's book about natural selection states that adaptation occurs by
__________ Ans: Population
Darwin defined this as not random, and largely dependent on heritable traits
Ans: Survival of the Fittest
The result of ________ is the adaptation of organisms to their environment Ans:
Natural Selection
True or False: SMALL changes accumulated in each generation can result in
MAJOR changes over evolutionary time Ans: True
What was the oldest forms of life? Ans: Prokaryotes
What are the simplest organisms? Ans: Prokaryotes
True or False: Same/Similar structures may have different functions Ans: True
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Analogous or Homologous: Similarities due to convergent evolution rather
than from a common ancestor
EX: bird wing and insect wing Ans: Analogous
Analogous or Homologous: Species that are related may have similar
structures with different functions Ans: Homologous
Analogous or Homologous: Similar because of common ancestry Ans:
Homologous
Analogous or Homologous: The same or similar structures that have different
functions
EX: human arm and bat wing Ans: Homologous
Analogous or Homologous: Looks similar, but has different ancestry Ans:
Analogous
Analogous or Homologous: Looks different, but has similar ancestry Ans:
Homologous
The selective breeding of domesticated plants and animals to encourage the
occurrence of desirable traits Ans: Artificial Selection
While the varieties of _______ aren't different species, they are on the path Ans:
Dogs
The smallest relevant evolutionary unit Ans: Populations
Evolution is the change of _______ in the population Ans: Gene Frequencies
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Principle that states that the percentages of the F1 generation are the same as
the P generation Ans: Hardy-Weinberg
True or False: In the absence of other factors, the segregation and
recombination of alleles during meiosis and fertilization WILL alter the overall
genetic makeup of a population Ans: False
What are the 5 conditions needed to maintain equilibrium? Ans: 1. No
Mutations
2. No Gene Flow
3. Population is Large
4. Random Mating
5. No Natural Selection
Out of the 5 conditions needed to maintain equilibrium, which condition is
almost impossible to stop even under artificial constructions? Ans: No
Mutations
Out of the 5 conditions needed to maintain equilibrium, which one can occur
when the population is isolated from other populations? Ans: No Gene Flow
Out of the 5 conditions needed to maintain equilibrium, which condition,
regardless of a chance event factor, won't affect the gene pool? Ans: Large
Population
Out of the 5 conditions needed to maintain equilibrium, which one really
never occurs unless it is artificially constructed? Ans: Random Mating
LSU BIOL 1202 - Exam 1
(Pomarico) Questions with
Detailed Verified Answers
True or False: FOSSILS were used to SUPPORT evolution Ans: False
Who placed fossils in an evolutionary context? Ans: Lamarck
Lamarck's mechanism of change principle states that _______ traits can be
passed along to the next generation Ans: Acquired
Darwin's book about natural selection states that adaptation occurs by
__________ Ans: Population
Darwin defined this as not random, and largely dependent on heritable traits
Ans: Survival of the Fittest
The result of ________ is the adaptation of organisms to their environment Ans:
Natural Selection
True or False: SMALL changes accumulated in each generation can result in
MAJOR changes over evolutionary time Ans: True
What was the oldest forms of life? Ans: Prokaryotes
What are the simplest organisms? Ans: Prokaryotes
True or False: Same/Similar structures may have different functions Ans: True
,2|Page
Analogous or Homologous: Similarities due to convergent evolution rather
than from a common ancestor
EX: bird wing and insect wing Ans: Analogous
Analogous or Homologous: Species that are related may have similar
structures with different functions Ans: Homologous
Analogous or Homologous: Similar because of common ancestry Ans:
Homologous
Analogous or Homologous: The same or similar structures that have different
functions
EX: human arm and bat wing Ans: Homologous
Analogous or Homologous: Looks similar, but has different ancestry Ans:
Analogous
Analogous or Homologous: Looks different, but has similar ancestry Ans:
Homologous
The selective breeding of domesticated plants and animals to encourage the
occurrence of desirable traits Ans: Artificial Selection
While the varieties of _______ aren't different species, they are on the path Ans:
Dogs
The smallest relevant evolutionary unit Ans: Populations
Evolution is the change of _______ in the population Ans: Gene Frequencies
, 3|Page
Principle that states that the percentages of the F1 generation are the same as
the P generation Ans: Hardy-Weinberg
True or False: In the absence of other factors, the segregation and
recombination of alleles during meiosis and fertilization WILL alter the overall
genetic makeup of a population Ans: False
What are the 5 conditions needed to maintain equilibrium? Ans: 1. No
Mutations
2. No Gene Flow
3. Population is Large
4. Random Mating
5. No Natural Selection
Out of the 5 conditions needed to maintain equilibrium, which condition is
almost impossible to stop even under artificial constructions? Ans: No
Mutations
Out of the 5 conditions needed to maintain equilibrium, which one can occur
when the population is isolated from other populations? Ans: No Gene Flow
Out of the 5 conditions needed to maintain equilibrium, which condition,
regardless of a chance event factor, won't affect the gene pool? Ans: Large
Population
Out of the 5 conditions needed to maintain equilibrium, which one really
never occurs unless it is artificially constructed? Ans: Random Mating
