BIOLOGICAL EVOLUTION OF EARLY HUMANS AND MODERN HUMANS

Is the change in inherited traits over successive generations in populations of organisms.

BIOLOGICAL EVOLUTION

Is the change in inherited traits over successive generations in populations of organisms.

CHARLES DARWIN

He introduced the concept of evolution to explain the origins of modern humans.

NATURAL SELECTION?

This individuals having more-useful traits, such as more-acute vision or swifter legs, survive better and produce more progeny than individuals with less-favourable traits.

INHERITANCE

Organism produce offspring with different sets of traits that can be inherited. 

VARIATION

Every species is made up of a variety of individuals with some better  adapted  to their environments compared to the others. 

SURVIVAL OF THE FITTEST

Organisms that have traits most suitable to their environment will survive and these variations are passed on to their offspring in subsequent generations. 

SAHELANTHROPUS

Mix of chimp and human features 

ARDIPHITECUS

Primitive teeth that probably walked up right

AUSTRALOPITHECUS

Teeth adapted to eating tough food

AUSTRALOPITHECUS AFARENSIS

Brain 35% size of human’s

HOMO HABILIS

Brain 50% size of human’s

HOMO ERGASTER

Brain 60% size of a human’s

HOMO ERECTUS

Brain 60-70% size of a human’s

HOMO

Found in Europe

HOMO NEANDERTHAL

Brain slightly larger than human’s

HOMO SAPIENS

Species where all modern humans belong to and considered as modern humans or the thinking man.