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Biol 1003 Exam 1 Detailed Questions And Expert Answers
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Biol 1003 Exam 1 Detailed Questions And Expert Answers
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Biol 1003 Exam 1 Detailed Questions AndExpert Answers
Which of the following is NOT a criteria for a good hypothesis?
- It is testable.
- It is correct.
- It provides an explanation for the question/observation.
- It answers the question being asked. - ANS It is correct
Which of the following is NOT required for a population of peppered moths in a
forest outside of London to adapt to darker tree color (and therefore higher
predation risk)?
- Some moths have more pigmentation (brown color) than others.
- Over an individuals' lifetime, they gain more pigmentation (i.e. they become
more brown).
- The degree of pigmentation (brownness) is passed on from parents to offspring.
- Moths differ in the number of offspring they have because of their coloration. -
ANS Over an individuals' lifetime, they gain more pigmentation (i.e. they become
more brown). - this is an acquired trait, not by natural selection
A company wants to determine if their cologne makes males who wear it more
attractive to females. They have males wear the same shirt and wash with the
same non-scented soap for 3 days. These males are also instructed not to exercise
during the 3 day period. Ten males are given an identical amount of cologne to
,spray on their shirt each morning. Ten males are given an identical amount of
water to spray on their shirt each morning. Ten females then smell each shirt and
rate the attractiveness. Which is the control group? independent variable?
Dependent variable? - ANS control group - water sprayed on shirts
independent variable- if the men wear cologne
dependent variable - level of attractiveness
When playing around with EvoDots, you notice that when you click, random dots
die, not the ones you are clicking on. You wonder if the population is going to
evolve. Select the correct statement:
- The population will evolve because there is still heritability and variation.
- The population will not evolve because there is no variation.
- The population will not evolve because there is no differential reproductive
success.
- The population will evolve because variation can be created through mutation. -
ANS The population will not evolve because there is no differential reproductive
success. When random dots die, that means the dots' traits (either speed or size)
do not affect their reproductive success (or in this case, whether they survive a
predator's killing attempt). This means that at least 1 of the 3 requirements for
natural selection is missing. We don't know anything about heritability and
variation.
You're watching a nature documentary about aardvarks and the narrator states
"Aardvarks have an acute sense of smell and hearing. Interestingly, aardvark's
nostrils close when they are attacked by ants or termites. This makes aardvarks
perfectly adapted to their environment." You think this statement shows a
common misconception about evolution. How would you respond?
, - These traits cannot be considered adaptations.
- All of these traits are likely acquired traits, so they cannot change via natural
selection.
- Offspring of aardvarks with a strong sense of smell may not have offspring with a
similarly powerful sense of smell.
- Evolution cannot make organisms perfect. Perfection just isn't possible. - ANS
Evolution cannot make organisms perfect. Perfection just isn't possible.
What is the relationship between evolution and natural selection?
- The two words mean the same thing.
- Natural selection is one way that evolution can occur.
- Evolution is a type of natural selection.
- Natural selection requires variation and evolution does not. - ANS Natural
selection is one way that evolution can occur.
What are the ways evolution can occur? - ANS Natural selection, mutation,
migration (gene flow), and genetic drift.
Look at the cartoon below. There are 3 requirements for evolution by natural
selection. For each requirement, explain how the cartoon is illustrating that (note
that there could be more than one answer). - ANS Variation: The creatures vary in
their height (as well as their color).
Heritability: We could interpret the goats on the left as being parents, and their
offspring share some of their traits
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