Evolution and Natural Selection

evolution

• A change in a species over time
• molecular biology supports the claim that all forms of life use the same genetic language of DNA and RNA, and the genetic code is essentially universal. thus it is likely that many species descended from one or a few common ancestors that used this code
• comparative embryology expresses that we all start the same, but as we grow and develop in the womb different body parts grow to have different functions than other animals might have
• comparative anatomy illustrates that evolution is a remodeling process in which ancestral structures that originally functioned in one capacity become modified as they take on new functions
• By arranging fossils in chronological order, gradual changes in organisms can be observed. This provides evidence because it shows how species have changed and developed over billions of years.

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How does evolution happen?

• natural selection
• A change in a species over time
• molecular biology supports the claim that all forms of life use the same genetic language of DNA and RNA, and the genetic code is essentially universal. thus it is likely that many species descended from one or a few common ancestors that used this code
• comparative embryology expresses that we all start the same, but as we grow and develop in the womb different body parts grow to have different functions than other animals might have
• comparative anatomy illustrates that evolution is a remodeling process in which ancestral structures that originally functioned in one capacity become modified as they take on new functions

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natural selection

• Organisms that are more adapted to their environment are more likely to survive and pass on the genes that helped with their success.
• natural selection
• A change in a species over time
• molecular biology supports the claim that all forms of life use the same genetic language of DNA and RNA, and the genetic code is essentially universal. thus it is likely that many species descended from one or a few common ancestors that used this code
• comparative embryology expresses that we all start the same, but as we grow and develop in the womb different body parts grow to have different functions than other animals might have

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NGSS.MS-LS4-1

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extinction

• loss of species forever
• Organisms that are more adapted to their environment are more likely to survive and pass on the genes that helped with their success.
• natural selection
• A change in a species over time
• molecular biology supports the claim that all forms of life use the same genetic language of DNA and RNA, and the genetic code is essentially universal. thus it is likely that many species descended from one or a few common ancestors that used this code

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NGSS.MS-LS4-1

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Law of Superposition

• States that the sedimentary rock on the bottom is the oldest and the layers on top are the youngest (no folding, faulting, tilting)
• loss of species forever
• Organisms that are more adapted to their environment are more likely to survive and pass on the genes that helped with their success.
• natural selection
• A change in a species over time

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What would affect the Law of Superposition?

• faulting, folding, or tilting
• States that the sedimentary rock on the bottom is the oldest and the layers on top are the youngest (no folding, faulting, tilting)
• loss of species forever
• Organisms that are more adapted to their environment are more likely to survive and pass on the genes that helped with their success.
• natural selection

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variation

• differences among a species
• faulting, folding, or tilting
• States that the sedimentary rock on the bottom is the oldest and the layers on top are the youngest (no folding, faulting, tilting)
• loss of species forever
• Organisms that are more adapted to their environment are more likely to survive and pass on the genes that helped with their success.

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Example of variation

• eye color
• differences among a species
• faulting, folding, or tilting
• States that the sedimentary rock on the bottom is the oldest and the layers on top are the youngest (no folding, faulting, tilting)
• loss of species forever

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adaptation

• organisms adjust to their environment in order to survive
• eye color
• differences among a species
• faulting, folding, or tilting
• States that the sedimentary rock on the bottom is the oldest and the layers on top are the youngest (no folding, faulting, tilting)

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mutation

• change in the genetic makeup of an organism
• organisms adjust to their environment in order to survive
• eye color
• differences among a species
• faulting, folding, or tilting

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