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KHANYISILE MBATHA
201214202
Human evolution defined
 human

evolution, the process by
which human beings developed on
Earth from now-extinct primates.
Viewed zoologically, we humans
are Homo sapiens, a culture-bearing,
upright-walking species that lives on
the ground and first evolved in Africa
between 100,000 and 200,000 years
ago.


We are now the only living members of what many
zoologists refer to as the human tribe, Hominini, but
there is abundant fossil evidence to indicate that we
were preceded for millions of years by other hominins,
such as Australopithecus, and that our species also
lived for a time contemporaneously with at least one
other member of
our genus, Homo neanderthalensis (the Neanderthal).
 In addition, we and our predecessors have always
share
 Trends

in human biological and

cultural evolution will be selected

from:
-Early changes exhibited from early bipedals
apes also comparison with living apes.
HUMAN EVOLUTION
AUSTRAPITHECINES
These

were the first pre-

known humans.
Various

species were found

in Africa.
Australopithecus
Australopithecus continued
The term australopithecine refers
generally to any species in the

related genera of Australopithecus
and Paranthropus. It may also include

members of Kenyanthropus
Ardipithecus and Praeanthropus.
The term comes from a former
classification as members of a distinct
subfamily, the Australopithecine. They are
now classified by some within
the Australopithecine sub-tribe of
the Homininitribe.


Members of australopithecus are
sometimes referred to as the ‘gracile
australopithecines’ while paranthropus
are called ‘robust australopithecine’
Many

theories exist

regarding the human
evolution.
Bipedalism
was the most important event in
human evolution because it freed
up the hands.
The large brain was able to take
advantage of this opportunity.
All primates have an upright
posture.
Advantages of Bipedalism
More energy-efficient at walking
speed than knuckle walking.
Also generates less heat.


Freed up hands for carrying offspring,
food and tools.
Advantages of Bipedalism con

Continued

 Keeps

body cool with less direct

surface area exposed to the sun
and greater air flow in drier air to
increase sweat evaporation
Adv
continued
 Gave

greater height for easier

detection of food and predators.
Upright stance may be more
intimidating
Homohabilis
 Rounded

skull still with brow ridges.

Some development of Broca’s region

suggesting language.
 Small

jaw, incisors and canines

suggesting an omnivorous diet.
Homohabilis


1.5 - 2.4mya in eastern Africa



Cranial volume 500 – 650cc



1 – 1.3m tall.



Made stone and bone Oldowan tools.



Some evidence of cooperative hunting
and scavenging for food.
To be continued
Life sciences grade 12 human evolution

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Life sciences grade 12 human evolution

  • 2. Human evolution defined  human evolution, the process by which human beings developed on Earth from now-extinct primates. Viewed zoologically, we humans are Homo sapiens, a culture-bearing, upright-walking species that lives on the ground and first evolved in Africa between 100,000 and 200,000 years ago.
  • 3.  We are now the only living members of what many zoologists refer to as the human tribe, Hominini, but there is abundant fossil evidence to indicate that we were preceded for millions of years by other hominins, such as Australopithecus, and that our species also lived for a time contemporaneously with at least one other member of our genus, Homo neanderthalensis (the Neanderthal).  In addition, we and our predecessors have always share
  • 4.  Trends in human biological and cultural evolution will be selected from: -Early changes exhibited from early bipedals apes also comparison with living apes.
  • 6. AUSTRAPITHECINES These were the first pre- known humans. Various species were found in Africa.
  • 8. Australopithecus continued The term australopithecine refers generally to any species in the related genera of Australopithecus and Paranthropus. It may also include members of Kenyanthropus Ardipithecus and Praeanthropus.
  • 9. The term comes from a former classification as members of a distinct subfamily, the Australopithecine. They are now classified by some within the Australopithecine sub-tribe of the Homininitribe.
  • 10.  Members of australopithecus are sometimes referred to as the ‘gracile australopithecines’ while paranthropus are called ‘robust australopithecine’
  • 12. Bipedalism was the most important event in human evolution because it freed up the hands. The large brain was able to take advantage of this opportunity. All primates have an upright posture.
  • 13. Advantages of Bipedalism More energy-efficient at walking speed than knuckle walking. Also generates less heat.
  • 14.  Freed up hands for carrying offspring, food and tools.
  • 16. Continued
  Keeps body cool with less direct surface area exposed to the sun and greater air flow in drier air to increase sweat evaporation
  • 17. Adv
continued  Gave greater height for easier detection of food and predators. Upright stance may be more intimidating
  • 18. Homohabilis  Rounded skull still with brow ridges. Some development of Broca’s region suggesting language.  Small jaw, incisors and canines suggesting an omnivorous diet.
  • 20.  1.5 - 2.4mya in eastern Africa  Cranial volume 500 – 650cc  1 – 1.3m tall.  Made stone and bone Oldowan tools.  Some evidence of cooperative hunting and scavenging for food.