Evolution- Kelly

Which term refers to the process by which individuals that are better suited to the environment survive and reproduce therefore passing down their genes to their offspring? 

• Evolution 
• Variation 
• Adaptation
• Natural Selection 

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reproductive success of an individual

• fitness
• natural selection

• negative selection

• positive selection

A phenotype that is NOT able to survive under selective pressure

• negative selection
• positive selection

• fitness

• natural selection

A phenotype that is able to survive under selective pressure

• positive selection
• natural selection

• negative selection

• fitness

Why didn't skin cancer have an affect on the evolution of skin color?

• Skin cancer mostly occurs after one's reproductive years.

• Skin cancer kills humans before they can reproduce.

• Skin cancer only affects people with lightly pigmented skin.

• Skin cancer can affect the evolution of skin color, just not as much as other factors.

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Skin color evolved due to...

• skin cancer.

• there being low diversity in the MC1R allele among African populations.

• people with darkly pigmented skin moving to higher latitudes.

• a need to get enough vitamin D from UV light, but the ability to protect one's folate levels too.

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An example of the Bottleneck Effect is..

• the Tasmanian devil population being separated from the mainland population in Australia.

• the Ice Age which decreased the cheetah population to 7 cheetahs in Africa.

• a few seeds from a sunflower population being blown far away from the original group of sunflowers.

• A few finches from Ecuador settling on the Galapagos Islands and starting a new population.

Look at the image. Identify what type of selection all the graphs are.

• 1. stabilizing

  2. directional

  3. diversifying

• 1. directional

  2. stabilizing

  3. diversifying

• 1. diversifying

  2. stabilizing

  3. directional

• 1. directional

  2. diversifying

  3. stabilizing

The selection of two extreme phenotypes, such as light and dark moths, is an example of...

• directional selection

• stabilizing selection

• diversifying selection

Structures with the same parts have different functions; suggests that organisms share a common ancestry

• vestigial structures
• homologous structures
• adaptive radiation
• fossil