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Acquired Immune Deficiency Syndrome

Acquired Immune Deficiency Syndrome   Reference library

Encyclopedia of Evolution

Reference type:
Subject Reference
Current Version:
2005
Subject:
Science and technology, Life Sciences, Social sciences, Anthropology
Length:
6,732 words
Illustration(s):
2

This entry comprises two articles. The introductory article provides a discussion of the origins and phylogeny of HIV; the companion

Adaptation

Adaptation   Reference library

Encyclopedia of Evolution

Reference type:
Subject Reference
Current Version:
2005

Adaptation refers to the many properties of organisms that enable those organisms to stay alive and reproduce. Adaptation is one

Agriculture

Agriculture   Reference library

Encyclopedia of Evolution

Reference type:
Subject Reference
Current Version:
2005
Subject:
Science and technology, Life Sciences, Social sciences, Anthropology
Length:
6,017 words
Illustration(s):
1

This entry comprises two articles. The first article provides an account of the times and places of earliest centers of

Alarm Calls

Alarm Calls   Reference library

Encyclopedia of Evolution

Reference type:
Subject Reference
Current Version:
2005

Alarm calls are highly conspicuous vocalizations given by animals when they encounter a predator. In some bird species, alarm calls

Algae

Algae   Reference library

Encyclopedia of Evolution

Reference type:
Subject Reference
Current Version:
2005

What are algae? Such a simple question, but there is no simple answer. Algae are important, ubiquitous, and diverse; they

Alloparental Care

Alloparental Care   Reference library

Encyclopedia of Evolution

Reference type:
Subject Reference
Current Version:
2005

Alloparental care is parentlike behavior that is typically performed by individuals that are not the parent of the recipient. The

Altruism

Altruism   Reference library

Encyclopedia of Evolution

Reference type:
Subject Reference
Current Version:
2005

Altruism is a form of cooperation (i.e., an act that enhances the fitness of others), but it is distinguished from

Amphibians

Amphibians   Reference library

Encyclopedia of Evolution

Reference type:
Subject Reference
Current Version:
2005
Subject:
Science and technology, Life Sciences, Social sciences, Anthropology
Length:
4,277 words
Illustration(s):
4

Amphibians are named for their two-phased life consisting of larva and adult. Typically the larva is aquatic and metamorphoses into

Ancient DNA

Ancient DNA   Reference library

Encyclopedia of Evolution

Reference type:
Subject Reference
Current Version:
2005

The first recovery of DNA from preserved biological remains dates to 1984, when Russ Higuchi and his colleagues isolated

Animals

Animals   Reference library

Encyclopedia of Evolution

Reference type:
Subject Reference
Current Version:
2005
Subject:
Science and technology, Life Sciences, Social sciences, Anthropology
Length:
4,082 words
Illustration(s):
3

The Metazoa (equals animals) is one of the great kingdoms of life. Estimates of the current numbers of living animal

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