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Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus

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Ancient asexual scandals.

O P Judson¹, B B Normark

¹Dept of Zoology, University of Oxford, South Parks Road, Oxford, UK OX1 3PS.

Trends in Ecology & Evolution

|January 18, 2011

Summary

This summary is machine-generated.

Ancient asexual organisms challenge evolutionary theories of sex. Studying these persistent lineages, like ferns and rotifers, offers insights into why most species reproduce sexually.

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Area of Science:

Evolutionary biology
Reproductive strategies
Asexual reproduction

Background:

The evolution of sexual reproduction is a dominant paradigm in biology.
The existence of ancient asexual lineages challenges established theories.
Organisms like ferns and rotifers are proposed candidates for ancient asexuality.

Purpose of the Study:

To address the theoretical challenges posed by ancient asexual lineages.
To review accumulating evidence supporting the existence of ancient asexuals.
To explore new methodologies for verifying claims of ancient asexuality.

Main Methods:

Review of existing literature on asexual lineages.
Analysis of proposed evidence for ancient asexuality in various taxa.
Discussion of novel techniques for assessing long-term asexuality.

Main Results:

Favorable evidence is increasingly being accumulated for ancient asexual lineages.
New techniques are being developed to rigorously assess claims of ancient asexuality.
Ancient asexuals, while challenging, provide valuable data points.

Conclusions:

Ancient asexual organisms persist despite theoretical challenges.
Understanding their persistence is crucial for a comprehensive theory of sex evolution.
Further research into these lineages will illuminate the advantages and disadvantages of sexual reproduction.