Arbuscular mycorhizal fungi, which have lived for 400 million years without sex, present a challenge to evolutionary theories about the role of sex. In the December 13 Nature Gerrit Kuhn and colleagues at the University of Lausanne, Switzerland, discuss genetic variation within Arbuscular mycorhizal fungus individuals, which contain hundreds of inherited nuclei (Nature 2001, 414:745-748).They carried out specific DNA-DNA FISH (fluorescent in situ hybridization) analysis to show that fungal spore
Arbuscular mycorhizal fungi, which have lived for 400 million years without sex, present a challenge to evolutionary theories about the role of sex. In the December 13
They carried out specific DNA-DNA FISH (fluorescent
These results highlight the difficulties of applying standard evolutionary and population genetics theories to multi-genomic organisms.
The liquid world of fetal development provides a rich source of nutrition and protection tailored to meet the needs of the growing fetus.
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