BIO CH19.2 Modern Evolutionary Classification

*The largest taxon is called?

• Domain

• Species

• Clade

• Kingdom

*The study of evolutionary history of lineages of organisms is called

• Phylogeny

• a genus

• Systematics

• Binomial nomenclature

Tags

NGSS.MS-LS4-2

*Using the cladogram above, which clades contain animals that have specialized shearing teeth?

• Carnivora

• Felidae

• Tetrapoda

• Mammalia

Tags

NGSS.MS-LS4-2

*Using the cladogram above, marsupials belong to which clades?

• Felidae

• Mammalia

• Tetrapoda

• Amniota

*What is one advantage of classifying species according to their evolutionary relationships instead of their physical appearances?

• Species are always changing, when we classify them by physical appearance we run the risk of missing important relationships.

• Species do not change overtime, when we classify them by evolutionary relationships we do not miss important relationships.

Tags

NGSS.MS-LS4-2

Evolutionary branch of a cladogram that includes a single ancestor and all its descendants

• Domain

• Species

• Clade

• Kingdom

Tags

NGSS.MS-LS4-3

*What is the goal of evolutionary classification?

• Group species into larger categories that reflect lines of evolutionary descent, rather than similarities and differences

• Classify organisms based on how closely related they are

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

*What is a cladogram?

• Diagram showing patterns of shared characteristics among species. It represents how one ancestral species branches into two species, each of which could found a new lineage.

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

Tags

NGSS.MS-LS4-2

*How are DNA sequences used in classification?

• The more derived genetic characters two species share, the more recently they shared a common ancestor and the more closely they are related in evolutionary terms.

• A true clade must contain DNA sequences similar in composition as other clades.

Tags

NGSS.HS-LS4-1

*What does the tree of life show?

• illustrates current hypotheses about relationships among organisms

• represents the last common ancestor of all fourlimbed animals (clade Tetrapoda).

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3