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Related Concept Videos

Morphogenesis02:19

Morphogenesis

Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.
Neurulation01:30

Neurulation

Neurulation is the embryological process which forms the precursors of the central nervous system and occurs after gastrulation has established the three primary cell layers of the embryo: ectoderm, mesoderm, and endoderm. In humans, the majority of this system is formed via primary neurulation, in which the central portion of the ectoderm—originally appearing as a flat sheet of cells—folds upwards and inwards, sealing off to form a hollow neural tube. As development proceeds, the anterior...
Determination01:51

Determination

During embryogenesis, cells become progressively committed to different fates through a two-step process: specification followed by determination. Specification is demonstrated by removing a segment of an early embryo, “neutrally” culturing the tissue in vitro—for example, in a petri dish with simple medium—and then observing the derivatives. If the cultured region gives rise to cell types that it would normally generate in the embryo, this means that it is specified. In contrast, determination...
Transcription01:10

Transcription

Overview
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
Transcription01:17

Transcription

Transcription is the synthesis of RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in correctly synthesizing messenger RNA (mRNA). Transcriptional regulation is responsible for the differentiation of different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds of RNA Molecules
In eukaryotes,...
Regulation of Expression Occurs at Multiple Steps02:24

Regulation of Expression Occurs at Multiple Steps

Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...

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Related Experiment Video

Updated: May 13, 2026

The Power of Simplicity: Sea Urchin Embryos as in Vivo Developmental Models for Studying Complex Cell-to-cell Signaling Network Interactions
07:34

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Encoding anatomy: developmental gene regulatory networks and morphogenesis.

Charles A Ettensohn1

  • 1Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA. ettensohn@andrew.cmu.edu

Genesis (New York, N.Y. : 2000)
|February 26, 2013
PubMed
Summary
This summary is machine-generated.

Understanding how genomes encode anatomy is key. Gene regulatory networks (GRNs) link genetic control to developmental processes, revealing how anatomy evolves through changes in gene expression during embryogenesis.

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Area of Science:

  • Developmental Biology
  • Evolutionary Biology
  • Genomics

Background:

  • Anatomy arises during embryonic development via morphogenesis.
  • Cellular and tissue properties driving morphogenesis stem from differential gene expression.
  • Gene regulatory networks (GRNs) are crucial for studying genetic control of development.

Purpose of the Study:

  • To link gene regulatory networks (GRNs) to morphogenetic processes.
  • To explore the genetic control of anatomy and its evolution.
  • To integrate molecular, cellular, and tissue-level data with GRN circuitry.

Main Methods:

  • Reviewing experimental models: sea urchin skeletogenesis, ascidian notochord morphogenesis, and Drosophila somatic muscle formation.
  • Analyzing morphogenetic mechanisms at multiple biological levels.
  • Examining underlying GRN circuitry and its evolutionary modifications.

Main Results:

  • Highlights three key experimental models for studying genetic control of anatomy.
  • Demonstrates integration of morphogenetic mechanisms, GRN circuitry, and evolutionary changes.
  • Provides insights into how GRNs shape anatomical features.

Conclusions:

  • Linking GRNs to morphogenesis is essential for understanding anatomical development and evolution.
  • Comparative analysis across different species reveals conserved and divergent genetic mechanisms.
  • Future research can leverage these models to further decipher the genome-anatomy relationship.