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Zoology

The scientific study of the animal kingdom, including extinct and possibly mythical beings.

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Zoology > Zoological terms

intergrading

Zoology; Zoological terms

The merging of characteristics of two populations where their ranges come into contact

internal compass

Zoology; Zoological terms

The hypothesized mechanism that allows organisms to orient themselves so as to proceed in the proper direction during long-distance movements such as migration.

introduced species

Zoology; Zoological terms

A species that humans have placed into an ecosystem or community (either accidentally or intentionally) in which it does not naturally occur.

invasion

Zoology; Zoological terms

Sudden large movement of individuals into an area where they are generally uncommon, often on an unpredictable basis

invertebrate

Zoology; Zoological terms

Animal without a backbone. Invertebrates make up over 90 percent of all animal species.

irruption

Zoology; Zoological terms

Sudden large movement of individuals into an area where they are generally uncommon, often on an unpredictable basis.

isolating mechanism

Zoology; Zoological terms

An obstacle to interbreeding, either extrinsic, such as a geographical barrier, or intrinsic, such as structural or behavioral incompatibility