Phylogenetic Systematics

Classifying organisms by their molecular structures is?

• Linnaean Classification

• Phylogenetic Systematics

• Molecular Classification

• Molecular Sorting

Cladistic classification traces the ___________________ of organisms.

• evolutionary descent

• physical similarities

• naming conventions

• regions of origin

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

A common ancestor of 2 species of organisms is

• the organism most closely related to a living organism

• the fossil organism most like a current organism

• The most recent ancestor they share

• the most frequent ancestor of organisms

Tags

NGSS.MS-LS4-2

This group includes every descendant of an organism and excludes everything not a descendant of that organism.

• Clade

• Class

• Kingdom

• species

Tags

NGSS.MS-LS4-3

The branch points of a cladogram represent _____ species evolving into ____

• 1,5

• 3,2

• 1,2

• 2,1

Tags

NGSS.MS-LS4-2

A chart of evolutionary relationships is a...

• defining characteristic

• classification taxa

• evolutionary tracer

• cladogram

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

A trait evolved by the last common ancestor of a particular lineage

• DNA analysis

• derived characteristics

• last common characteristic

• shared characteristics

Tags

NGSS.MS-LS4-2

Why do we group snakes with reptiles when the reptile clade is defined as having limbs?

• snakes ancestors evolved legs then lost them

• other similarities mean we can make an exception

• snakes have more traits in common with reptiles than other groups

• despite the new evidence scientists kept snakes as reptiles

Tags

NGSS.MS-LS4-2

The lowest point at which lines from two organisms on a cladogram meet is their ______________.

• derived characteristic

• phylogenetic systematic

• evolutionary touchpoint

• common ancestor

Tags

NGSS.HS-LS4-1

A derived characteristic defines a _____________.

• clade

• character group

• class

• species

Tags

NGSS.MS-LS4-2