Evolution

Based on Darwin's ideas of Natural Selection, he said that organisms in nature overproduce. Why do frogs and other organism reproduce so many eggs or offspring?

• so that their babies can have friends to play with

• the more offspring the more likely the offspring will survive

• the more offspring the less likely offspring will survive

• the more offspring the less competition

Remember sedimentary rock from 6th grade?????? According to the law of superposition, the fossils found in the lower layer of rocks are ________ than those found at higher layer

• older

• Same age

• Younger

• tougher

When every organism of a species has died.

• Evolution
• Natural Selection
• Extinction
• Artificial Selection

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The theory of evolution by natural selection means that ________________________ is changing over time?

• the inherited traits of a population.

• the acquired traits of a population.

• hair color and eye color

• attractive features.

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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Mutations are a change in what?

• DNA
• tRNA
• genotype
• phenotype

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Remember this from our Genetics Unit? We'll talk about it again next week. The purpose of selective breeding (or artificial selection) is to

• Get bigger animals

• get smaller animals

• create animals with desirable traits

• create animals with bad traits

The gradual change in a species over time

• Evolution

• Natural Selection

• Extinction

• Artificial Selection

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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Modern whales developed their traits through natural selection.  What occurs during the process of natural selection?

• Organisms choose mates from other species to create new species
• Breeders selectively cross organisms with desired traits
• Only the fittest organisms can survive and reproduce
• Organisms remain exactly the same over time.

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