Evolution

 Evolution

is change in the heritable characteristics of biological populations over successive generations. These characteristics are the expressions of genes that are passed on from parent to offspring during reproduction.

 

The three main types of evolution: divergent, convergent, and parallel evolution.

Theres also Introduction and Coevolution.

 

Punctuated equilibrium can be contrasted with evolution by phyletic gradualism, in which evolution occurs at a constant rate. Eldredge and Gould claim that this hardly ever happens and the dispute between the two theories is one of the most important in evolutionary biology.

 

Evolution, in this context, is both a fact and a theory. It is an incontrovertible fact that organisms have changed, or evolved, during the history of life on Earth. And biologists have identified and investigated mechanisms that can explain the major patterns of change.

Evolution can't explain complex organs

Organs that allow detection of light could then have been favoured by natural selection, even if it did not provide full vision. These ideas have been proven correct many years later by researchers studying primitive light-sensing organs in animals.

 

Biological populations evolve through genetic changes that correspond to changes in the organisms' observable traits. ... Evolution does not attempt to explain the origin of life (covered instead by abiogenesis), but it does explain how early lifeforms evolved into the complex ecosystem that we see today.



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