Term
| What impact do antibiotics have on viruses? |
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Definition
| None - antibiotics are used for bacteria not viruses |
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Term
| What can happen to bacteria when they are exposed to antibiotics? |
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Definition
| some may die but some may survive so that the population evolves to be more like the ones which survive |
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Term
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Definition
| When a new species arises |
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Term
| In the statement, "speciation has been notoriously difficult to investigate," what is meant by the term, notoriously? |
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Definition
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Term
| In order to provide evidence about the impact viruses have on bacteria, what type of evidence may be needed? |
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Definition
| Details about observed results of how viruses and / or bacteria survived |
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Term
| What is meant by the phrase, "survival of the fittest?" |
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Definition
| This means that whichever is best suited to the environment will survive and reproduce. |
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Term
| In the statement, "the bacteria had a nondiscriminatory appetite," what is meant by the term, nondiscriminatory? |
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Definition
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Term
| What is meant by variation in a population? |
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Definition
| This refers to the various different traits that may be observed in a population |
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Term
| What can affect the selection of traits in a population? |
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Definition
| both the length the individuals with those traits live and whether those individuals can reproduce |
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Term
| Complete this statement, "Variation and selection lead to adaptation because..." |
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Definition
| variations that make an individual better suited to an environment will be selected as adaptation in an environment. |
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Term
| What is another word for trait? |
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Definition
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Term
| What is meant by the term, natural selection? |
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Definition
| This is when the environment impacts which organisms can survive (be selected for survival). |
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Term
| What is meant by the term, evolution? |
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Definition
| This is the change that occurs over generations within a species. |
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Term
| What is meant by the term, adaptation? |
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Definition
| This is a trait that helps an organism survive in its environment. |
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Term
| When bacteria have different traits within their population this is called... |
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Definition
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Term
| The best adapted individuals survive and reproduce contributing the most offspring to future generations is a description of what happens due to... |
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Definition
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Term
| Green bugs on a green background of leaves blending into their environment and surviving as opposed to blue bugs being eaten is an example of... |
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Definition
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Term
| Green bugs on a green background are better __________ to their environment than blue bugs. |
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Definition
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Term
| What are some of the premises on which evolution by natural selection is based? |
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Definition
1. organisms produce more offspring than environment can support
2. most populations remain the same size through time
3. heredity differences between organisms can be passed to offspring |
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Term
| Why are microorganisms such as bacteria used for studies in evolution? |
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Definition
| this is because microorganisms have short life cycles making it possible to more easily observe population changes over many generations |
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Term
| What is it called when one species split into two during evolution? |
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Definition
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Term
| What evidence did we discover that shows bacteria may evolve due to natural selection? |
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Definition
| when we investigated the impact of antibiotics in the environment where we grew bacteria some bacteria survived and grew more |
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