phylogenetic video

What do phylogenetic trees and cladograms both show?

• The geographical distribution of species

• The chemical composition of species

• The dietary habits of species

• The evolutionary relationship between species

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NGSS.MS-LS4-2

What kind of data can be used to form the different branch points and speciation events in phylogenetic trees?

• Meteorological data

• Morphological data and DNA sequences

• Economic data

• Psychological data

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What is a key difference between cladograms and phylogenetic trees?

• Cladograms show the evolutionary relationship, while phylogenetic trees do not.

• Phylogenetic trees are hypotheses, while cladograms are facts.

• Cladograms show the dietary habits of species.

• Phylogenetic trees show the amount of time that two groups have been separated.

What does the gray highlighted area in a phylogenetic tree represent?

• A shared evolutionary history between all studied species

• The most recent common ancestor of all species

• A geographical barrier that led to speciation

• The extinction event of a species

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NGSS.MS-LS4-2

What does a branch point in a phylogenetic tree represent?

• A point where two species share a common diet

• A point where a species becomes extinct

• A point where species share the same habitat

• A point in evolutionary history where speciation occurred

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How can the evolutionary relatedness of species be determined using a phylogenetic tree?

• By the position of species on the tree

• By looking at the most recent common ancestor and the branch points

• By the length of the branches only

• By the color of the branches

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NGSS.MS-LS4-2

What does the order of species across the top of a phylogenetic tree indicate?

• Their evolutionary superiority

• Their geographical distribution

• The order is not important; branch points are what matter

• Their population size

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NGSS.HS-LS4-1

What can be inferred if two species share a more recent common ancestor?

• They have a larger population

• They are physically larger

• They live in the same habitat

• They are more closely related

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NGSS.MS-LS4-2

What does the presence of a trait in the gray line of a phylogenetic tree indicate?

• The trait is found only in the most recently evolved species

• The trait is undesirable and will be selected against

• The trait is found in all species studied

• The trait is a result of convergent evolution

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NGSS.HS-LS4-1

What is the significance of rotating a branch point in a phylogenetic tree?

• It changes the evolutionary relationships depicted

• It has no effect on the evolutionary relationships depicted

• It signifies an extinction event

• It indicates a mutation event

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NGSS.MS-LS4-2