Adaptations and Fitness from Snurfle Islands

Variation is best described as

• differences among individuals in a population

• similarities among individuals in a population

• camouflage and illusions

• when individuals are identical to each other

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Adaptations

• are acquired characteristics developed over an organism's lifetime allowing it better fitness

• are genetically inherited variations that increase fitness in a particular environment

• are harmful alleles passed on to unfortunate individuals in a population

• are neutral traits that have no effect on survival in any population

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Which statements are consistent with natural selection?

• individual organisms are able to change their genetic adaptations in order to better survive changing environments

• more offspring are produced than can survive in an environment

• there is genetic variation within populations

• organisms with beneficial variations are more likely to survive and reproduce

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Do individuals evolve?

• yes

• no

• never

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Evolution is best defined as genetic change in

• a cell

• an individual

• a population

• the biosphere

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It has been found that many insect pest populations have become more resistant to pesticides over time. How might this have occurred?

• pesticide-resistant insects died and did not pass on their genes

• the chemical pesticides given to insects have mutated and no longer work

• pesticide resistant insects survived and passed on their genes for resistance

• individual insects have learned to resist pesticides and have changed themselves in order to survive and reproduce

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Evolutionary fitness is

• being large and muscular

• an organism fit in one environment will be equally fit in any other environment

• the relative ability of an organism to survive and reproduce

• the ability to bench press at least three times your body weight

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Which Snurfle is the fittest?

• A Snurfle that eats the most food, even though it cannot reproduce

• A Snurfle that does not survive.

• A Snurfle that eats less than others but is able to produce more and pass on its genes

• A Snurfle that beats up other Snurfles to show its dominance.

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Why is variation important?

• it ensures that some members of the species survive changes in the environment

• it is what natural selection acts on

• they are helpful in different environments, allowing certain genes to be passed on preferentially in environments that favor them

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What would be the evolutionary fitness of a studly snurfle with bulging biceps, six pack abs and great hair, that also happens to be sterile (unable to reproduce)?

• very high fitness

• zero fitness

• somewhat low fitness

• somewhat high fitness

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