Related Experiment Video
Updated: Mar 25, 2026

Author Spotlight: RNAi Inheritance and ChIP in C. elegans
Published on: May 5, 2023
tRNA fragments: novel players in intergenerational inheritance
Katharina Gapp1,2, Eric A Miska1,2
1The Gurdon Institute and Department of Genetics, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QN, UK.
Paternal environmental exposures, like diet, can influence offspring traits through non-genetic inheritance. Transfer RNA fragments are newly implicated in mediating these transgenerational effects in mammals.
Area of Science:
- Epigenetics and non-genetic inheritance
- Molecular biology
- Mammalian reproduction
Background:
- Non-genetic inheritance, particularly transgenerational effects from paternal environmental exposures, is gaining prominence.
- Understanding the molecular mechanisms behind these inheritance patterns is crucial.
Purpose of the Study:
- To investigate the role of specific RNA molecules in mediating intergenerational effects of paternal dietary interventions.
- To explore novel pathways for non-genetic inheritance in mammals.
Main Methods:
- Analysis of transfer RNA fragments in offspring following paternal dietary manipulation.
- Comparative studies across independent research groups.
Main Results:
- Two independent studies identified transfer RNA fragments as key mediators.
- These RNA fragments are implicated in the inheritance of phenotypes resulting from paternal environmental exposures.
Conclusions:
- Transfer RNA fragments represent a significant, previously underexplored, mechanism for non-genetic inheritance.
- Further research into RNA-mediated epigenetic inheritance is warranted to understand its full scope in mammals.
More Related Videos
11:29Modified Terminal Restriction Fragment Analysis for Quantifying Telomere Length Using In-gel Hybridization
Published on: July 10, 2017
10:01Observation and Quantification of Telomere and Repetitive Sequences Using Fluorescence In Situ Hybridization FISH with PNA Probes in Caenorhabditis elegans
Published on: August 4, 2016
Related Concept Videos
Non-nuclear Inheritance
Non-nuclear Inheritance
Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...
Chromosomal Theory of Inheritance
Inheritance of Chromatin Structures
Law of Segregation