Challenging dogmas: How transgenerational epigenetics reshapes our views on life

Area of Science:

• Molecular Biology
• Genetics
• Developmental Biology
• Reproductive Biology

Background:

• Transgenerational epigenetics inheritance (TEI) involves heritable changes in gene expression and phenotypes without altering DNA sequences.
• TEI research challenges fundamental biological tenets and redefines heredity.
• The field connects environment, soma, and germ cells, impacting offspring health outcomes.

Purpose of the Study:

• To explore how TEI has reshaped biological understanding and definitions.
• To argue for the revolutionary impact of TEI in biology.
• To examine the erosion of established biological theories due to TEI.

Main Methods:

• Historical framework analysis.
• Exploration of seminal studies in TEI.
• Discussion of molecular mechanisms and conceptual shifts.

Main Results:

• TEI demonstrates the transfer of environmental information via extracellular vesicles, crossing the Weismann barrier.
• The concept of an epigenetic "blank slate" in mammals is challenged.
• TEI supports the inheritance of acquired characteristics.

Conclusions:

• TEI represents a revolutionary paradigm shift in biology.
• It refines the understanding of the central dogma and heredity.
• TEI necessitates a re-evaluation of established biological principles.