What is evolution?

Evolution is the process by which living organisms have changed over time through natural selection and other mechanisms. It is a fundamental concept in biology that explains the diversity of life on Earth.

Evidence for evolution

There are several lines of evidence that support the theory of evolution, such as the fossil record, comparative anatomy, molecular biology, and more. The fossil record shows a progression of life forms over time, providing insights into the history of species and their relationships.

Mechanisms of evolution

Natural selection, genetic variation, adaptation, genetic drift, and gene flow are some of the key mechanisms driving evolution. These processes lead to changes in populations over generations, resulting in the diversity of species that we see today.

Role of evolution

Evolutionary biology plays a crucial role in understanding how life has evolved and diversified over millions of years. It helps us trace the common descent of all living organisms and explains how new species arise through mechanisms like speciation.

Overall, evolution is a central concept in biology that has shaped the vast biodiversity on Earth. Understanding how species evolve and adapt to their environments is essential for studying the history and development of life on our planet.