Descent with Modification

"Whoa! All these finches used to be one species on this island! Now their beaks are all structurally different! Some are good for functioning as a nutcracker, others an insect cather, others a nectar drinker! I think nature selected these changes over time!"

Who am I?

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NGSS.MS-LS4-2

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Examine this phylogeny tree (cladogram). According to this tree, what Kingdom(s) of organisms share the most recent common ancestor with a cat or a human?

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NGSS.MS-LS4-2

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Look at these giraffe fossils over time! The necks are so much shorter millions of years ago! I wonder if over time the giraffes reaching for the higher leaves on the Acacia Trees caused the species to grow longer necks!!!

Who am I?

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NGSS.MS-LS4-1

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NGSS.MS-LS4-4

Ara macao (Scarlet Macaw) males are brightly colored. This poses a major problem with predators seeing them easily! How on EARTH did natural selection lead to these male birds being this bright with such a survival disadvantage?

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NGSS.HS-LS4-2

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An descendent species is

• the process by which one population evolves into two or more different species

• a related organism from a previous generation

• a more recent species that evolved from an ancestor population

• a part of an organism (for example, one or more bones)

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NGSS.MS-LS4-1

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Identify and explain the four pieces of strong scientific evidence that support the Scientific Theory of Evolution.

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NGSS.MS-LS3-1

NGSS.MS-LS4-1

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Compare and contrast a change in a population over time due to genetic drift versus natural slection.

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NGSS.HS-LS4-2

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Examine this phylogeny tree (cladogram). According to this tree, are humans more closely related to archaeans or bacteria? Explain.

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NGSS.MS-LS4-2

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Which bear species shared the most recent common ancestor with the Panda? Explain.

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NGSS.MS-LS4-1

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A population of green frogs lives in a shallow pond in Altman. A few of the frogs have a random mutation that causes their skin pigment to be brown rather than green. Explain a scenario where this mutation could become selected for and eventually over many many generations become the normal color for the green frog.

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NGSS.MS-LS3-1

NGSS.MS-LS4-4