Natural Selection and Speciation

A new river forms and splits two populations, causing ______________ speciation

• Sympatric

• Allopatric

• Extreme

• Convergent

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Orcas occur in the same habitat but some are avoiding each other and do not interbreed. They have different diets, vocal behavior, and social structures. What type of speciation is this?

• Allopatric

• Sympatric

• Complex

• Covergent

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when the organism develops different courtship rituals which do not attract main population this is a part of ____________ speciation.

• Allopatric

• Sympatric

• Simple

• Temporal

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NGSS.HS-LS4-5

The emergence of a mountain range is an event that would lead to _______________ speciation

• Allopatric

• Sympatric

• Temporal

• Behavioral

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When the Grand Canyon in Arizona formed, two populations of one squirrel species were separated by the giant canyon. This is an example of _____________ speciation.

• Allopatric

• Sympatric

• Simple

• Divergent

Tags

NGSS.HS-LS4-5

The presence of islands represents what type of reproductive isolation

• allopatric speciation

• sympatric speciation

Tags

NGSS.HS-LS4-5

A physical trait favored by an environmental change can be called an

• adaptation

• extinction

• possibility

• mutation

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Where the better adapted organisms survive to pass traits along to offspring.

• Evolution
• Natural Selection
• Extinction
• Artifical Selection

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Which of the following explains adaptation.

• An individual organism changes to meet its needs in the environment. These changes pass down to their offspring.
• The species as a whole changes their characteristics.
• Beneficial traits allow organism to survive and pass on those traits
• New characteristics arise in a species as needed.  If these traits are helpful, they are passed down.

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Darwin referred to this as survival of the fittest. Over time, it results in changes in the inherited characteristics of a population because organisms with adaptations that make them fit for their environment will survive and reproduce better than those without favorable traits.

• Natural Selection
• Genetic Variation
• Survival of the Fittest

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