Phylogenies can also move evolutionary biology lessons from the level of microevolution to the level of macroevolutionary change, which is often missing in standard curricula (Padian, 2008).
These narratives move from evolutionary biology to other fields, notably biomedicine.
Beginning well over a million years ago, we (our human genetic line) began moving along an evolutionary track that made us ever more dependent on cultural transmission, that is, upon education.
On the other hand, genetic variation in genes associated with down-regulation of the IIS pathway has been associated with human longevity in several instances, although, when moving up the evolutionary ladder, together with an increase in genome complexity, effect sizes became smaller [ 22].
The presence of fixed ITS2 variants within the A. longirostris rDNA genotypes suggests the rDNA array is moving as a single evolutionary unit through interbreeding populations.
Anopheles longirostris revealed nine independently evolving rDNA genotypes with each genotype showing fixed ITS2 sequence variants and suggesting that the rDNA array is moving as a single evolutionary unit or locus.
Interestingly the ITS2 copy variants appear fixed in all individuals of each genotype suggesting that intrachromosomal events are the primary driver of rDNA turnover in A. longirostris and that the rDNA array is moving as a single evolutionary unit within interbreeding populations.
The stability of these intragenomic ITS2 copy variants within individuals and interbreeding populations suggests that rDNA is moving as a single evolutionary unit through natural populations to fixation and has provided a complementary diagnostic tool to the restriction digest for studying genetic discontinuities and species boundaries.
At the Evolution 2010 meeting in Oregon in June 2010, a symposium on 'Moving towards a science of evolutionary prediction' suggested that the next challenge will be to improve the accuracy of evolutionary prediction (http://www.evolutionsociety.org/SSE2010), although the prediction of evolution is still difficult.
As our household organisms move up the evolutionary ladder, acquiring wings and faces, we hire mercenaries to drive them out.
