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Gametes (Spermatozoa)

A. Schmidt-Rhaesa

in The Evolution of Organ Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780198566687
eISBN:
9780191718007
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198566687.003.0014
Subject:
Biology, Evolutionary Biology / Genetics

Although spermatozoa have no organ system, they are the product of organ systems and are of enormous evolutionary importance. Spermatozoa typically possess an acrosome, a nucleus, mitochondria, and a ... More


Pachycephalosauria

Teresa Maryanska, Ralph E. Chapman, and David B. Weishampel

in The Dinosauria

Published in print:
2004
Published Online:
March 2012
ISBN:
9780520242098
eISBN:
9780520941434
Item type:
chapter
Publisher:
University of California Press
DOI:
10.1525/california/9780520242098.003.0024
Subject:
Biology, Evolutionary Biology / Genetics

Pachycephalosauria is a group of bipedal ornithischians with thickened bones of the skull roof. The group is widely distributed throughout the Northern Hemisphere, mostly in western North America and ... More


Speciation and Geographic Differentiation

Jonathan B. Losos

in Lizards in an Evolutionary Tree: Ecology and Adaptive Radiation of Anoles

Published in print:
2009
Published Online:
March 2012
ISBN:
9780520255913
eISBN:
9780520943735
Item type:
chapter
Publisher:
University of California Press
DOI:
10.1525/california/9780520255913.003.0014
Subject:
Biology, Evolutionary Biology / Genetics

This chapter discusses the role of speciation in adaptive radiation of anoles and then examines the geographical context of anole speciation, beginning by discussing the mechanistic approaches to the ... More


Space for the Brain in Cognitive Science

Neil Burgess, Christian F. Doeller, and Chris M. Bird

in Cognitive Biology: Evolutionary and Developmental Perspectives on Mind, Brain, and Behavior

Published in print:
2009
Published Online:
August 2013
ISBN:
9780262012935
eISBN:
9780262255264
Item type:
chapter
Publisher:
The MIT Press
DOI:
10.7551/mitpress/9780262012935.003.0063
Subject:
Biology, Evolutionary Biology / Genetics

This chapter argues that advances in cognitive neuroscience provide valuable insights into the organization of spatial cognition. It considers a number of current controversies in spatial cognition, ... More


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