Genes and Variation Evolution

Any change in the sequence of DNA is a

• recombination

• mutation

• chromatin

• independent assortment

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Traits that help an organism survive are called....

• evolution
• natural selection
• adaptations
• habitats

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Almost all populations have some variation.

• true
• false

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Which is a group of organisms with similar characteristics and are able to interbreed to produce offspring

• Variation

• Species

• Fitness

• Gene

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Differences in DNA between individuals or populations

• Environmental Variation

• Genetic Variation

• Adaptive Feature

• Genetic Engineering

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The process of making changes in the DNA code of a living organism is called

• selective breeding 
• genetic engineering
• inbreeding
• hybridization

Which best describes these fossils?

• The oldest fossils can be found on the lower layers
• The oldest fossils can be found at the top layers
• The youngest fossils are always found on the bottom layers
• You can not tell the age of any of these fossils

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Individuals that are well adapted to their environment will survive and produce:

• Fewer mutations
• Stronger genes
• More offspring
• Better traits

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The gradual change in species over time is...

• Evolution
• Nucleotide 
• Adaptation
• Natural Selection

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The white feathers of a snowy owl allow it to blend in with its environment during the winter months (snow). This is an example of ________________

• Species
• Environmental Change
• Adaptation
• Variation

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