BSC 196 Exam 1 Questions With Correct
Answers
What is evolution? - CORRECT ANSWER✔✔-Change in populations over
| | | | | | | | |
time
What are the four principal requirements of evolution by natural
| | | | | | | | | |
selection? - CORRECT ANSWER✔✔-1.) Variation
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2.) fitness differences
| |
3.) inheritance
|
4.) more offspring produced than can survive
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corollary - CORRECT ANSWER✔✔-maximum population size
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How did John Endler test the hypothesis that color patterns in guppies
| | | | | | | | | | | |
represent a trade-off between selection to avoid predation and
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selection to attract a mate? - CORRECT ANSWER✔✔-Collected guppies
| | | | | | | | |
from the wild and used experimental ponds. Each contained a full range
| | | | | | | | | | | |
of color variation. Manipulated 1.) intensity of predation and 2.) size of
| | | | | | | | | | | |
gravel.
, When predators were present, male guppies with traits that helped
| | | | | | | | | |
them hide (spot size similar to gravel size and drab colors), were more
| | | | | | | | | | | | |
likely to breed. In populations without predators, males with sexy traits
| | | | | | | | | | |
(spots opposite to gravel size and bright colors) were more likely to
| | | | | | | | | | | |
breed.
Why is natural selection not simply a matter of chance? - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-the survival and reproductive success of an individual is | | | | | | | | |
directly related to the ways its inherited traits function in the context of
| | | | | | | | | | | | |
its local environment
| |
What is an adaptation? - CORRECT ANSWER✔✔-a trait which fosters the
| | | | | | | | | |
survival/reproduction of an individual within a particular environment
| | | | | | | |
What kinds of testable predictions can be derived from the theory of
| | | | | | | | | | | |
evolution as it applies to the fossil record? - CORRECT ANSWER✔✔-1.)
| | | | | | | | | | |
species that lived in the past should be different from extant species
| | | | | | | | | | | |
2.) simple life should be found in the strata and more complex forms
| | | | | | | | | | | | |
should only occur in recent strata
| | | | | |
3.) there should be transitional forms between major taxonomic groups
| | | | | | | | |
How do direct observations of natural populations provide evidence of
| | | | | | | | | |
change over time? - CORRECT ANSWER✔✔-studying current
| | | | | | |
populations can show how they adapt to environmental changes
| | | | | | | |
Answers
What is evolution? - CORRECT ANSWER✔✔-Change in populations over
| | | | | | | | |
time
What are the four principal requirements of evolution by natural
| | | | | | | | | |
selection? - CORRECT ANSWER✔✔-1.) Variation
| | | |
2.) fitness differences
| |
3.) inheritance
|
4.) more offspring produced than can survive
| | | | | |
corollary - CORRECT ANSWER✔✔-maximum population size
| | | | |
How did John Endler test the hypothesis that color patterns in guppies
| | | | | | | | | | | |
represent a trade-off between selection to avoid predation and
| | | | | | | | |
selection to attract a mate? - CORRECT ANSWER✔✔-Collected guppies
| | | | | | | | |
from the wild and used experimental ponds. Each contained a full range
| | | | | | | | | | | |
of color variation. Manipulated 1.) intensity of predation and 2.) size of
| | | | | | | | | | | |
gravel.
, When predators were present, male guppies with traits that helped
| | | | | | | | | |
them hide (spot size similar to gravel size and drab colors), were more
| | | | | | | | | | | | |
likely to breed. In populations without predators, males with sexy traits
| | | | | | | | | | |
(spots opposite to gravel size and bright colors) were more likely to
| | | | | | | | | | | |
breed.
Why is natural selection not simply a matter of chance? - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-the survival and reproductive success of an individual is | | | | | | | | |
directly related to the ways its inherited traits function in the context of
| | | | | | | | | | | | |
its local environment
| |
What is an adaptation? - CORRECT ANSWER✔✔-a trait which fosters the
| | | | | | | | | |
survival/reproduction of an individual within a particular environment
| | | | | | | |
What kinds of testable predictions can be derived from the theory of
| | | | | | | | | | | |
evolution as it applies to the fossil record? - CORRECT ANSWER✔✔-1.)
| | | | | | | | | | |
species that lived in the past should be different from extant species
| | | | | | | | | | | |
2.) simple life should be found in the strata and more complex forms
| | | | | | | | | | | | |
should only occur in recent strata
| | | | | |
3.) there should be transitional forms between major taxonomic groups
| | | | | | | | |
How do direct observations of natural populations provide evidence of
| | | | | | | | | |
change over time? - CORRECT ANSWER✔✔-studying current
| | | | | | |
populations can show how they adapt to environmental changes
| | | | | | | |
