Macroevolution

Definition

Macroevolution refers to large-scale evolutionary changes that occur over long periods of time, resulting in the formation of new species or higher taxonomic groups.

Related terms

Speciation:

Speciation is the process by which new species arise from a common ancestor. It occurs when populations become reproductively isolated and accumulate enough genetic differences to be considered distinct species.

Extinction:

Extinction refers to the complete disappearance of a species from Earth. It can occur due to environmental changes, competition with other organisms, or natural disasters.

Adaptive Radiation:

Adaptive radiation is when a single ancestral species rapidly diversifies into multiple different lineages. This often occurs when different subgroups face different environmental conditions and adapt accordingly.