BIG30 #15 Natural Selection

Behavioral changes of individuals of a species that allow for better survival. (Acquired traits)

• Variation
• Adaptation
• Behavior
• Environment

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What is the advantage of having different shaped beaks?

• To look different from other species.
• To be able to eat the food readily available in the environment.
• To protect itself against predators.
• To protect itself against prey.

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Genetic diversity in a species makes long term survival of some members

• impossible

• improvable

• more likely

• less likely

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Natural Selection is driven by a change in the environment and survival of the

• Earth

• Fastest

• Fittest

• Biggest

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Why did the population of peppered moths in England change from light to dark after the Industrial Revolution?

• Light moths were easy to see against sooty trees and were eaten
• Light moths were killed by soot
• The birds that ate the dark moths were killed by soot
• Dark moths were produced by industrial processes

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Why are advantageous traits more likely to be passed onto offspring?

• Because they are more likely to survive and reproduce.
• Because they come from dominant alleles.
• Because they come from recessive alleles.
• Because the trait is an acquired phenotype.

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A grizzly bear survives because he is well-adapted to his environment. When he reproduces he passes on those traits to his offspring. this process is called

• Natural Selection

• Selective Breeding

• Random mutations

• Variations in a species

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The male and female black widow spider look very different. However, we know they are the same species because:

• They reproduce creating fertile offspring

• They reproduce creating infertile offspring

• They cannot reproduce

• They are not the same species

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In recent years "SuperBugs" (bacteria that aren't effected by antibiotics) are becoming more and more common. How could natural selection explain this?

• Superbugs survive antibiotics and reproduce
• Antibiotics cause bacteria to become superbugs
• We have always had the same amount of superbugs; modern media just discusses them more.
• There is no reliable data on the origin of super bugs.

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Humans have been a very successful species on earth.  They have very large, very diverse populations spread all around the world. As a result,

• Human have very limited ability to adapt to changes in the environment.
• Young humans have lower survival rates as compared to other species.
• Humans have a potential to adapt to various environmental changes.
• All humans are more disease resistant.

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