adaptive radiation
The production of several species from one ancestral species is called adaptive radiation. This process occurs when a single ancestral species diversifies into multiple different species in order to adapt to various ecological niches.
Evoultion.
analogous structure
A radiation event. Called adaptive radiation.
The term that refers to the phenomenon of evolving different adaptive forms from ancestral species is called divergent evolution. This occurs when two or more related species become increasingly different over time due to adapting to different environments or ecological niches.
Charles Robert Darwin and Alfred Russel Wallace discovered the process of evolution called natural selection by Darwin.
Hemlock tree are in the genus Tsuga, and there are several species. The Eastern Hemlock is called Tsuga canadensis, the Western Hemlock is called Tsuga heterophylla. There are several other species.
humans are part of incredible Species. The whole species is responsible.
anasazi
Those organs are called vestigial organs. They are remnants of functional structures that were more developed in ancestral species but have decreased in size or usefulness in the current organism.
Characteristics that were present in the common ancestor of the entire group of organisms.This character state is called ancestral for the group as a whole.
A modified structure that is seen among different groups of descendants is called a derived trait. This trait has evolved from the ancestral form and is characteristic of a particular lineage or group of related species.