Heterochrony pp 201-275 | Cite as

Heterochrony and Targets of Selection

  • Michael L. McKinney
  • Kenneth J. McNamara

Abstract

To understand the importance of heterochrony in evolution, one of the main aspects that needs to be considered is the target of selection. By this we mean intrinsically generated structures are being preferentially selected under extrinsic regimes. We have demonstrated how the raw material for evolution can be produced at the intrapopulation level by the generation of heterochronic morphotypes as part of normal phenotypic variation. Extrapolating this to the interspecific level and above, we need to examine what is being selected, e.g., shape, size, life habits, behavior, or all of these.

Keywords

Silurian Mold Cretaceous Androgen Jurassic 

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Copyright information

© Springer Science+Business Media New York 1991

Authors and Affiliations

  • Michael L. McKinney
    • 1
  • Kenneth J. McNamara
    • 2
  1. 1.The University of TennesseeKnoxvilleUSA
  2. 2.Western Australian MuseumPerthAustralia

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