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EEG Mu Rhythm in Typical and Atypical Development
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Why call it developmental bias when it is just development?

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Summary
This summary is machine-generated.

Developmental constraints, or biases, do not accurately represent development's role in evolution. Instead, development positively shapes morphological variation, guiding evolutionary trajectories alongside natural selection.

Keywords:
DevelopmentDevelopmental biasDevelopmental constraintsDevelopmental mechanismsMorphogenesisMorphological evolutionVariational properties

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Area of Science:

  • Evolutionary Biology
  • Developmental Biology
  • Morphological Evolution

Background:

  • The concept of developmental constraints has been central to understanding development's role in morphological evolution.
  • Developmental constraints are defined as biases imposed by development on morphological variation.
  • This concept arose to counter the view that natural selection is all-capable, highlighting development's importance.

Purpose of the Study:

  • To argue that developmental constraints and biases do not accurately represent development's role in evolution.
  • To propose a shift from viewing development as a constraint to understanding it as a positive shaper of variation.
  • To redefine the research program in evolution and development.

Main Methods:

  • This opinion article critically analyzes the concept of developmental constraints.
  • It re-evaluates the assumption of isotropic morphological variation in evolutionary theory.
  • It proposes a reframing of development's role in evolution.

Main Results:

  • Development does not lead to isotropic morphological variation; this expectation is untenable.
  • Development's role should be viewed positively: it determines possible directions of morphological variation.
  • The concept of constraints is a negative framing, precluding variation that is not expected.

Conclusions:

  • The concepts of developmental constraints and biases are inaccurate and should be replaced.
  • Development positively shapes morphological variation, influencing evolutionary directions.
  • A new research program should focus on how development and natural selection together determine evolutionary trajectories.