CLASS 10 · LEARNING KNOWLEDGE
Evolutionary evidence and speciation – basic principles
How it works
Evolution explains the emergence and change of species through natural processes such as mutation, selection, isolation and genetic drift. Evidence for evolution includes fossils, homologies (similarities due to common ancestry), analogies (similarities in function without common ancestry), and molecular comparisons. Speciation often occurs through isolation of populations, so that no more gene exchange takes place and differences accumulate.
Note
Evolutionary evidence shows changes and relationships between organisms; speciation usually arises through isolation and subsequent genetic differences.
Evolutionary evidence shows changes and relationships between organisms; speciation usually arises through isolation and subsequent genetic differences.
An example
Which finding speaks most directly for a common ancestry of two species?
Homologous organs, because they go back to a common structural plan and demonstrate a lineage.
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50 Exercises
To the learning unit →Own explanation and own practice exercises by AmyMath. Subject reference framework: Biology. The topic assignment may vary by federal state.