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Intro
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Clonal Reproduction Is Not an Evolutionary Dead End
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- 1 Intro
- 2 Clonal reproduction is not an evolutionary dead end
- 3 Clonal reproduction and modularity very widespread life history
- 4 Important terminology- genet vs. ramet (J.F. Harper 1977)
- 5 A role for genotypic - clonal diversity, replaces species level diversity in species- poor systems
- 6 Yet there are millenia-old clones in corals or seagrasses that dominate entire locations
- 7 A long-standing ecological riddle
- 8 Substantial somatic genetic variation among ramets of the same genet
- 9 What to we mean with a fixed SNP?
- 10 Genealogy and tree root can be reconstructed
- 11 How do we know that this is really a single clone = Benet?
- 12 How do these data compare to recent full genome oak studies?
- 13 Evolving microbial culture, orange genotype sweeps to fixation
- 14 Unitary vs. modular species
- 15 Somatic mutations always enterramets as mosaic genetic variation
- 16 Proliferating cell population in plants - apical meristem, their genotype determines entire plant
- 17 Seagrass data:pronounced modes in allele frequency distribution
- 18 Modes of low frequency variants reflect subfixation in stratified meristematic tissue
- 19 Evidence for somatic genetic drift: low-frequency variants to rise to fixation consistent with ramet topology
- 20 Quick summary
- 21 Perspective: can the somatic genetic variation contribute to adaptation?
- 22 Challenge #1: mutations need to be partially dominant to be visible to selection in diploids in
- 23 Evolutionary pathways with and without sex
- 24 But empirical data show appreciable and often similarly rapid adaptation under sexual vs. asexual propagation
- 25 What is the evidence that somatic mutations may confer phenotypic variation?
- 26 What is the evidence that somatic genetic variation may confer phenotypic variation?
- 27 challenge #3: causal polymorphisms difficult to detect since genetic hitchhiking is pervasive (-entire genome linkage group)
- 28 Cancer evolutionary biology is facing the same analogous issue what are the casual driver mutations?
- 29 Some methods from detecting adaptive dynamics from cancer can be applied to detecting positive selection in modular species
- 30 How does the somatically generated variation compare to variation owing to recombination?
- 31 Clone members - ramets and concepts of individuality revisited
