Phylogenic Trees and Cladograms

Uses characteristics shared by organisms to show how species may be related

• Cladogram

• Dichotomous Key

• Family Tree

• Classification Chart

Tags

NGSS.MS-LS4-2

a cladogram is a

• hypothesis

• known fact

• scientific law

• stepwise chart

cladograms show how species

• develop habitats

• could be related

• perform symbiosis

Tags

NGSS.MS-LS4-2

phylogenic trees use __________ and molecular evidence

• physical characteristics

• physical location

• behavioral patterns

Tags

NGSS.MS-LS3-1

A biologist sequences a gene shared by five different species. The percentage of sequence similarity for four different gene segments, A, B, C, and D, are shown in the table. Using the data in the table, move the species labels into the blank boxes of the cladogram to show the relationships among the species.

b

c

d

e

a

1

2

4

3

5

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

NGSS.HS-LS4-3

What do the nodes (the black dots) represent?

• Common Ancestor

• Modern Species

• Extant Species

• Extinct Species

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

A biologist sequences a gene shared by five different species. The percentage of sequence similarity for four different gene segments, A, B, C, and D, are shown in the table. Using the data in the table, move the species labels into the blank boxes of the cladogram to show the relationships among the species.

b

c

d

e

a

3

5

4

2

1

Tags

NGSS.MS-LS4-2

in phylogenetic trees, organisms with the LOWEST #of differences

• are closely related

• are not closely related

In phylogenetic trees organisms with the LOWEST # of differences are

• FAR APART

  on the tree

• CLOSE TOGETHER

  on the tree

Tags

NGSS.MS-LS4-2

in phylogenetic trees, longer lines indicate

• close relationship

• distant relationship