Areas Quote by Ernst Mayr

Transitional forms are generally lacking at the species level, but they are abundant between larger groups.

— Stephen Jay Gould

The thing that defines a species is that all members have the same addressing system for their DNA.

— Richard Dawkins

The fundamental problem in the origin of species is not the origin of differences in appearance, since these arise at the level of the…

— David Lack

Each species may have had its origin in a single pair, or individual, where an individual was sufficient, and species may have been created…

— Charles Lyell

In nature alone are forms. That which is not of nature cannot have any forms, fine or gross. It must be formless.

— Swami Vivekananda

“Species that evolved from a common ancestor are bunched together under the heading ‘genus’ (plural genera).”

— Yuval Noah Harari

“As the species of the same genus usually have, though by no means invariably, much similarity in habits and constitution, and always in structure,…

— Charles Darwin

Phylogeny and ontogeny are, therefore, the two coordinated branches of morphology. Phylogeny is the developmental history [Entwickelungsgeschichte] of the abstract, genealogical individual; ontogeny, on…

— Ernst Haeckel

Now when naturalists observe a close agreement in numerous small details of habits, tastes and dispositions between two or more domestic races, or between…

— Charles Darwin

A species is a reproductive community of populations reproductively isolated from others that occupies a specific niche in nature.

— Ernst Mayr

In a language, in the system of language, there are only differences. Therefore, a taxonomical operation an undertake the systematic, statistical, and classificatory inventory…

— Jacques Derrida

A species consists of a group of populations which replace each other geographically or ecologically and of which the neighboring ones integrate or hybridise…

— Ernst Mayr