1977838
Description
Mind Map by leonie jones, updated more than 1 year ago
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Created by leonie jones
about 11 years ago
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B1.1 THE THEORY OF EVOLUTION
- THE CREATIONIST THEORY
- All forms of life existing were created by god
- Modern creationism
uses scientific evidence
to support scripture
- All forms of life existing were created by god
- KEY WORD: evolution= the gradual
change of a species over time
- JEAN BAPTISTE LAMARK THOUGHT...
- All organisms were linked by
'the fountain of life'
- No evidence of this
- No evidence of this
- Animals adapted
to suit their
envoirnment
- Caused by inheritance of
aquired charecteristics
- How they behaved
affected features of
their body 'use it or
loose it'
- Changes in bodies were quite
clearly not passed onto
offspring
- Changes in bodies were quite
clearly not passed onto
offspring
- All organisms were linked by
'the fountain of life'
- CHARLES DARWIN THOUGHT...
- Evolution through natural selection
- Challenged belief that god made all plants
and animals on earth
- Challenged belief that god made all plants
and animals on earth
- 'Survival of the fittest'
- Usefull inherited charecteristics are
passed onto offspring
- No way of explaining variety and inheritance together
- No way of explaining variety and inheritance together
- Spent years gathering evidence on HMS
beagle and studied many different
species
- Many scientists argued that
there is not enough evidence
- Many scientists argued that
there is not enough evidence
- Evolution through natural selection
- EVIDENCE OF EVOLUTION
- FOSSILS
- Preserved remains of
organisms, or the
imprint of organisms
from millions of years
ago
- Shows how much or how
little an orgaisms has
changed over time
- Fossil record is
incomplete... there are
gaps
- Preserved remains of
organisms, or the
imprint of organisms
from millions of years
ago
- LIVING ORGANISMS
- Similar organisms have differences that
help them adapt to their envoirnment
- They have similar body plans
descended from a common ancestor
- Differences such as zebra stripes for camoflauge
show that they have adapted totheir envoirnment
- Similar organisms have differences that
help them adapt to their envoirnment
- FOSSILS
- NATURAL SELECTION
- 'Survival of the fittest'
- Individuals in a species show
variation caused by mutations to
give advantages
- Only offspring with best genes
survive and breed sucsessfully
- This passes these advantageous
genes onto the next generation
- 'Survival of the fittest'
- CLASSIFICATION
- Organisation of living things
according to their similarities
- Natural classification to clasify
living organisms
- kingdom is the biggest
group, they get more
specific as they get smaller
- Classes:
kingdom,
phylum,
class,
order,
family,
genus
and
species
- Species is group of similar organisms
that can interbreed to producefertile
offspring
- To see if they are the same species you breed them and if the orgaism is fertile
they are the same species, eg lion and tiger breed to produce a liger so they are
not in the same species because the offspring is infertile
- To see if they are the same species you breed them and if the orgaism is fertile
they are the same species, eg lion and tiger breed to produce a liger so they are
not in the same species because the offspring is infertile
- Species is group of similar organisms
that can interbreed to producefertile
offspring
- Classes:
kingdom,
phylum,
class,
order,
family,
genus
and
species
- Organisation of living things
according to their similarities
- EVOLUTIONARY TREES
- Oldest species at base of tree
- Recently evolved species and
mostshown at end of
branches
- More recently the
species have diverged
the more closely related
they are
- Extinct creatures can
not be at top of
branch
- All linked to once common ancestor
- Oldest species at base of tree
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