Human Evolution ICSE Class 10 | Human Evolution Biology Class 10 |

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Human Evolution
Basic introduction to Human evolution and Theories of evolution: Lamarck’s theory of
inheritance; Darwin’s theory of evolution by natural selection.
 A brief idea of human ancestors – Australopithecus, Homo habilis, Homo erectus, Neanderthals, Cro-Magnon and Homo sapiens sapiens (Modern Man) with reference to the following characteristics:
Bipedalism
Increasing Cranial capacity
Reduction of size of canine teeth
Forehead and brow ridges
Development of chin
Reduction in body hair
Height and Posture
 Lamarck’s theory of inheritance of acquired characteristics – with reference to use of
organs (e.g.: neck and forelimbs of giraffe) and disuse of organs (e.g.: vestigial organs
in humans like wisdom teeth, vermiform appendix, pinnae).
 Darwin’s theory of Natural selection: Survival of the fittest - e.g. adaptation of
peppered moth.