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EDEXCEL HIGHER GCSE BIOLOGY TOPIC 8£6.25

Title: Hereditary and Evolution
Description: Hereditary and Evolution Session 2

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Session 2

EVOLUTION

Evolution:
Evolution is the gradual change occurring in living organisms over a long
duration
...

Formation of new species due to changes in specific characters of several
generations of living organisms as a response to natural selection, is called as
evolution
...
In due course of time, unicellular organism was formed
...
All those changes were slow and gradual
...
Changes and
development in living organisms had been all round and multi-dimensional and
this led to evolution of different types of organisms
...
Progressive development of plants
and animals from the ancestors having different structural and functional
organization is called evolution
...
Morphological Evidences :
Various similarities like structure of mouth, position of eyes, structure of nostrils
and ear pinnae and thickly distributed hairs on body are seen in animals
...

occur in case of plants
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2
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Similarly, use of each of those structures is different in respective animals
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This similarity indicates that those animals may have common ancestor
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There are total 6 evidences of
evolution
...
Fill in the blanks:
a) The proof for the fact that protein synthesis occurs through _____ was given
by George Beadle and Edward Tatum
...

II
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Answer the following questions:
1
...



Title: Hereditary and Evolution
Description: Hereditary and Evolution Session 2