Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Sequence heterochrony and the evolution of development.

Kathleen K Smith1

  • 1Departments of Biology and Biological Anthropology and Anatomy, Duke University, Durham, North Carolina 27708, USA. kksmith@duke.edu

Journal of Morphology
|March 29, 2002
PubMed
Summary

Comparative developmental biology explores rules linking ontogeny and phylogeny. This study broadens the concept of heterochrony beyond size and shape to include developmental sequences, offering new methods for evolutionary analysis.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

J. P. Hill and Katherine Watson's studies of the neural crest in marsupials.

Journal of morphology·2020
Same author

Comparative skeletal anatomy of neonatal ursids and the extreme altriciality of the giant panda.

Journal of anatomy·2019
Same author

Adaptations of the Marsupial Newborn: Birth as an Extreme Environment.

Anatomical record (Hoboken, N.J. : 2007)·2018
Same author

An electromyographic study of the function of the jaw adducting muscles in Varanus exanthematicus (varanidae).

Journal of morphology·2018
Same author

The morphology of the intrinsic tongue musculature in snakes (Reptilia, ophidia): Functional and phylogenetic implications.

Journal of morphology·2018
Same author

COMPARATIVE PATTERNS OF CRANIOFACIAL DEVELOPMENT IN EUTHERIAN AND METATHERIAN MAMMALS.

Evolution; international journal of organic evolution·2017

Area of Science:

  • Evolutionary developmental biology
  • Comparative biology
  • Phylogenetics

Background:

  • The relationship between ontogeny (development) and phylogeny (evolution) is a core question in biology.
  • Heterochrony, changes in developmental timing, is a dominant concept in evolutionary developmental biology.
  • Current studies often limit heterochrony to changes in size and shape, restricting broader evolutionary questions.

Purpose of the Study:

  • To broaden the concept of heterochrony beyond growth (size and shape) to include changes in developmental sequences.
  • To present a general approach for analyzing sequence heterochrony.
  • To introduce new methods for studying diverse developmental changes within phylogenetic frameworks.

Main Methods:

  • Contrasting growth heterochrony with sequence heterochrony.

Related Experiment Videos

  • Developing a general framework for sequence heterochrony analysis.
  • Applying new analytical methods to developmental changes in explicit phylogenetic contexts.

    • Main Results:

    • The narrow focus on growth heterochrony has limited the scope of developmental evolution research.
    • A broader view of heterochrony, including sequence changes, allows for more comprehensive evolutionary analyses.
    • Emerging methods enable the analysis of various developmental changes within phylogenetic trees.

    Conclusions:

    • Expanding the study of heterochrony to include developmental sequences is crucial for understanding evolution.
    • New analytical approaches facilitate the examination of diverse developmental changes in evolutionary contexts.
    • These methods offer valuable insights into the evolution of development, particularly in mammals.