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Related Experiment Video

Updated: May 16, 2026

Determination of Self- and Inter-(in)compatibility Relationships in Apricot Combining Hand-Pollination, Microscopy and Genetic Analyses

Determination of Self- and Inter-(in)compatibility Relationships in Apricot Combining Hand-Pollination, Microscopy and Genetic Analyses

Published on: June 16, 2020

Self-incompatibilty in gamete recognition: single self-recognizing determinants and multiple, non-self-recognizing

Yoshito Harada¹, Hitoshi Sawada

¹Sugashima Marine Biological Laboratory, Graduate School of Science, Nagoya University, Sugashima, Toba, Japan. yharada@bio.nagoya-u.ac.jp

Molecular Reproduction and Development

|November 28, 2012

Summary

This summary is machine-generated.

Self/non-self discrimination systems evolved via genetic drift, not active selection. This process results in one self-recognizing determinant versus multiple non-self determinants within species genomes.

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Area of Science:

Evolutionary biology
Immunology
Genetics

Background:

Self/non-self discrimination is crucial for organism survival.
The evolutionary pathways of these systems are not fully understood.

Purpose of the Study:

To investigate the evolutionary mechanisms shaping self/non-self discrimination systems.
To determine the factors influencing the number of recognition determinants.

Main Methods:

Analysis of evolutionary processes, including genetic drift and natural selection.
Examination of the genetic basis of self/non-self recognition.

Main Results:

Self/non-self discrimination frameworks evolved passively through genetic drift.
Natural selection favored advantageous mutations, increasing their frequency.
The system structure dictates a single self-determinant versus multiple non-self determinants.

Conclusions:

The evolution of self/non-self discrimination is primarily driven by genetic drift.
The number of determinants is a consequence of the system's framework, not determinant characteristics.