Phylogenies

What is a phylogeny a description of?

• DNA

• mutations

• evolutionary history

• organisms on Earth

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

Which best describes a branch point in a phylogenetic tree?

• a hypothesis

• new lineage

• hybridization

• a mating

Tags

NGSS.MS-LS4-2

Which best describes the relationship between chimpanzees and humans?

• chimpanzees evolved from humans

• humans evolved from chimpanzees

• chimpanzees and humans evolved from a common ancestor

• chimpanzees and humans belong to the same species

Tags

NGSS.MS-LS4-2

What is true about organisms that are a part of the same clade?

• They all share the same basic characteristics.

• They evolved from a shared ancestor.

• They all are on the same tree.

• They have identical phylogenies.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

Which assumption of cladistics is stated incorrectly?

• Living things are related by descent from a common ancestor.

• Speciation can produce one, two, or three new species.

• Traits change from one state to another.

• The polarity of a character state change can be determined.

Tags

NGSS.MS-LS4-2

A monophyletic group is a ________.

• phylogenetic tree

• shared derived trait

• character state

• clade

Label the following taxonomy

a

b

c

d

e

f

g

h

i

Domain

Order

Family

Genus

Class

Kingdom

Subspecies

Phylum

Species

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

organize all living organisms by evolutionary relatedness

• phylogeny

• taxonomy

• systematics

• phylogenetic trees

Tags

NGSS.MS-LS4-2

phylogenetic trees

• branching diagrams represent evolutionary relationships

• match classifying groups of organisms in more inclusive groups

• loss of key feature over evolution may result in misclassification

• rank species based on importance and significance in evolution

Tags

NGSS.MS-LS4-3

a ? represents hypothesis about evolutionary relationships

• rooted tree

• branch point

• sister taxa

• phylogenetic tree

Tags

NGSS.MS-LS4-2