3. Biological Evolution
• It refers to the changes,
variations in the genetics
and inherited traits of
from one generation to
• Scientists study the
changes in the physical
body of humans, the
changes in the shape
and size of their bones.
4. Cultural Evolution
• It refers to the changes
or development in
cultures from a simple
form to a more complex
form of human culture.
• Scientist study the
cultural evolution of
humans by analyzing
the changes in the
latter’s way of life.
6. • The evolution of species happens through
the process of natural selection.
• The reason for occurrence of evolution.
• The outcome processes that affect the
frequencies of traits in a particular
environment. Traits that enhance survival
and reproductive success increase in
frequency over time.
7. • Every species is made up of a variety
of individuals wherein some are
adopted to their environments
compared to others
8. • Organisms produce progeny with
different sets of traits that can inherited
• Organisms that have traits most
suitable to their environment will
survive and transfer these variations to
their offspring in subsequent
Differential reproductive success
11. • The general term used to categorize the
group of early humans and other
humanlike creatures that can walk
erect during the prehistoric period.
13. • It had both apelike and
1. A skull similar to
Australopithecus and modern
2. Height almost similar with the
3. Brain size: 320-380 cc
4. Small teeth
5. Had the ability to walk upright
1. Sahelanthropus tchadensis
6-7 million years ago