Darwin based his theory on things he saw. For example he noticed how farmers bred animals for different characteristics. Darwin also observed variations among birds and thought that this was a result of natural selection enabling some birds better survival chances that others.
However Darwin's theory is deeply flawed because these changes can never result in new species being developed.
Darwin said if it could be shown that complex things did not develop from simple things then his theory would not stand.
Scientists know these days about the complex biological machines that are found inside cells and these cannot be reduced to simpler forms
Evolutionary Classification.
Almost the same, at least Darwin thought so. Alfred Russel Wallace.
The theory of evolution by natural selection is not based on chance.
Evolution
To show evolutionary relationships based on traits
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Through the evolutionary biology which attempts to explain events and processes that have already taken place.
artificial selection
artificial selection
artificial selection
Evolutionary Classification.
The procedure of grouping organisms based on their evolutionary history is called evolutionary classification. It is also called Darwinian classification.
The ideas of descent with modification are based on fossils and the modern organisms he found basically says that genetic changes are inherited by later generations.
Taxonomy is the science of classifying and naming organisms based on their characteristics and evolutionary relationships. It helps to organize and categorize living organisms into groups that reflect their genetic and morphological similarities.
They thought the evolution of new species is linked to environmental changes
They thought the evolution of new species is linked to environmental changes