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Human Evolution
Flashcards for Mrs. Messers Exit Exam on Human Evolution
7
Biology
9th Grade
12/08/2008

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Term

Define Bipedel

Definition
Being able to walk upright, on two legs.
Term

What does similarity in DNA mean?

Definition
Similarity in DNA is due to common design, so common ancestry. Similar DNA points to similar organisms.
Term

Australopithicus

Definition
This is possibly the closest related "version" of the human form ( which included Lucy )
Term
Homo Erectus
Definition
An extinct species of the genus Homo, believed to have been the first hominin to leave Africa.

H. erectus originally migrated from Africa around 2.0 million years ago, and dispersed throughout most of the Old World. Fossilized remains 1.8 and 1.0 million years old have been found in Africa

Term
Homo Neanderthalensis
Definition
Around 600,000-350,000 years ago, NOT an ancestor of human, although very closely related. They were bipedel, and behaved much like us, but were thought to be much more aggresive, but also smarter.
Term
Homo Habilis
Definition
2.2 million - 1.6 million years ago, bipedel, longer arms and shorter torso than that of a human, believed to be the first to use primitive tools. (spears, knives, etc.)
Term
What Are Some Hominid Characteristics?
Definition

teeth: small front teeth, and very large molars vs. other primate species;

posture: bipedalism,

-shortening of the arms relative to the legs,

-restructuring of the pelvic bones for weight bearing,

-restructuring of the foot or weight bearing, opposible toes (?)

hands: increased manual dexterity involving a lengthening of the thumb;

brain: increase in brain size, especially in the frontal lobes;

face: reduction in the musculature and bone mass of the skull and face.

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