Evidence of Ancestral Relationships

A clade contains

• all organisms with similar appearances.

• organisms living within the same ecosystem.

• an ancestral species and all the organisms that came before it.

• an ancestral species and all its descendants.

Tags

NGSS.MS-LS4-2

If two species have similar DNA sequences but different observable characteristics,

• they are not closely related.

• scientists need to re-examine the DNA evidence.

• the species are more closely related than their appearances imply.

• they could not have shared a recent common ancestor.

Tags

NGSS.MS-LS4-2

A single common ancestor and all of its descendants is considered a...

• phylogenetic group

• monophyletic group

• taxon

• clade

The splitting point on a cladogram is considered a...

• clade

• derived character

• root

• node

A trait that arose in the most recent common ancestor of a group and was passed on to its descendants

• clade

• cladogram

• derived characters

• node

Tags

NGSS.MS-LS4-2

Homologous genes in two organisms can tell use...

• the similarities and differences in appearance

• how closely related organisms are to each other

• what genes mutated

• the genetic make up of the organism

Tags

NGSS.MS-LS4-2

Which groups share derived character 1

• A and B

• A and C

• B and C

• A, B and C

Tags

NGSS.MS-LS4-2

Which descendant doesn't share any derived characters?

• A

• B

• C

• None they all share 1 derived character

Tags

NGSS.MS-LS4-2

Which of the following groups shares the most recent common ancestor?

• Mosses and ferns

• cone-bearing plants and ferns

• cone-bearing plants and flowering plants

• Mosses and flowering plants

Tags

NGSS.MS-LS4-2

Which derived character appeared first during the course of the plants' evolution

• embryo

• vascular tissue

• seeds

• flowers