Bio Animal Diversity

Sensory organs and brain are concentrated around one location

Inherited characteristics that an organiam shares with an ancestor

Features not found in ancestors, a new trait that establishes a unique group

Cartilage that surrounds and protects the brain

Bone structures that protect the spinal cord and expand the range of motion

Flexible rod that extends the length of the back; can develop into a backbone or spine

A sac or membrane that encases the embryo

What does the amnion allow for?

Exhibited bipedalism
Shorter than modern humans
Hips oriented to the back
Wide ribcage
Opposable big toe with wide, flat feet

Extremely large teeth
Protruding jaws, large brow ridg
Sagittal crest (protrusion running vertically along scalp, almost like a mohawk)
No species is a direct ancestor of Homo sapiens

Only remaining member of genus Homo
Relatively large bodies and brains
Smaller teeth
Flatter face - no protruding jawline, teeth are flatter rather than pointing sharply outward
Culture and tool use

Bipedalism can be determined by spine orientation, where the spine enters the skull from:

A short and wide pelvis, longer legs, knees slanted inwards, and arched feet are characteristics of:

What is the most diverse group of chordates?

The most recently developed chordates display this trait:

The first characteristic chordates developed was the presence of the:

Distantly evolved chordates have skeletons made up of: