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Updated: Jul 6, 2026

Genetic Mapping of Thermotolerance Differences Between Species of Saccharomyces Yeast via Genome-Wide Reciprocal Hemizygosity Analysis

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Published on: August 12, 2019

Heredity--venturing beyond genetics.

Marie-Christine Maurel¹, Colette Kanellopoulos-Langevin

¹Laboratoire de Biochimie de l'Evolution et Adaptabilité Moléculaire, Institut Jacques-Monod, UMR 7592, CNRS and Universités Paris 6 and 7, 75251 Paris Cedex 05, France. maurel@ijm.jussieu.fr

Biology of Reproduction

|April 11, 2008

Summary

Beyond genetics, mothers transmit crucial epigenetic factors like cytoplasmic components and cells, influencing offspring development and health through non-Mendelian matrilineal heredity.

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Area of Science:

Epigenetics and Developmental Biology
Maternal-Offspring Interactions

Background:

Heredity traditionally focuses on Mendelian genetic transmission.
Emerging evidence suggests non-genetic factors play a significant role in inheritance.

Purpose of the Study:

To explore epigenetic mechanisms beyond Mendelian inheritance.
To examine the role of maternal cytoplasmic factors and cell transmission in heredity.

Main Methods:

Review of existing literature on epigenetic inheritance.
Analysis of maternal contributions including macromolecules, organelles, and cells.
Postulation of cytoplasmic heredity and microchimerism as non-Mendelian inheritance.

Main Results:

Maternal oocytes contain cytoplasmic components essential for early development.
Maternal cells can persist in offspring, leading to microchimerism.
These epigenetic factors represent matrilineal, non-Mendelian inheritance.

Conclusions:

Heredity involves more than just genetic elements.
Epigenetic factors transmitted maternally significantly impact offspring development and health.
Maternal contributions offer uncharted depths in understanding inheritance.