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Phylogenetics is the attempt to reconstruct the evolutionary relationships between species. Historically, this was done using quantitative morphological data, but modern methods rely more heavily on DNA sequence data.
Five laws derived from fossil data describe the relationships between species extinction and longevity, species richness, origination rates, extinction rates and diversification. These laws are crucial to the study of evolution and ecology.
The origin of photosynthetic eukaryotes requires two major endosymbiosis events. Organelle acquisitions impose an increase in reactive oxygen species production, as well as the expansion of redox-sensitive proteasome in photosynthetic eukaryotes.
DNA sequencing is faster and cheaper than ever before but quantity does not necessarily mean quality. Towards a comprehensive understanding of the microbial biosphere, we need more reference genomes from single-celled eukaryotes (protists) across the full breadth of eukaryotic diversity.
Resurrection plants can survive extreme drying during periods of prolonged drought stress, maintaining a quiescent state for months to years until the return of water. Analysis of the genome and transcriptome of the resurrection plant Xerophyta viscosa links the evolution of desiccation tolerance to rewired pre-existing seed pathways.
Data from many genes across the genome are now being routinely used in the hope of reconstructing challenging parts of the tree of life, and a new method provides a practical way of resolving the phylogenetic trees suggested by different genes.