However, most animals tested possess a neocortex and have been domesticated, and may, as a result, have experienced evolutionary pressure to recognize their human carers.
While researchers cannot rule out the possibility that the earlier migration relates to foraging conditions where they winter in Africa, ecologist and lead author Niclas Jonzén of the University of Lund in Sweden says the better explanation is that birds migrating from Africa have experienced evolutionary changes "based on selection pressure for early breeding in Europe".
Thus, it is possible that subtle modulation of nucleotide sequence may also serve to regulate protein structure and function, and such sequence may have experienced evolutionary pressure to produce fully functional proteins.
It may be the case that other biopolymers such as proteins could have experienced evolutionary pressures based on interpretive abilities.
Collectively, these data argue that CG9000 has undergone serial duplications before the diversification of the Drosophila genus, and that CG9001 and CG9002 have experienced evolutionary change that has resulted in a specific function in the male germline.
The emerging picture is one in which the Malaysian yeast population has experienced unique evolutionary pressures on metal metabolism, highlighting the palm flower niche of these microbes as a driver of evolutionary change.
Gene duplication and intron gain and loss are all indicative of increased molecular evolution, suggesting that the laforin locus in these organisms has experienced increased evolutionary pressures.
This finding was very surprising, as Prochlorococcus has experienced an evolutionary streamlining of its genome, leading to very compact genomes between 1.64 and 2.68 Mb, which notably results in a small number of regulatory proteins (Kettler et al., 2007).
Whether it has experienced a similar evolutionary history like the fungal groups mentioned previously is still an open question.
These examples clearly suggest that the necessity to avoid aggregation has experienced a similar evolutionary driving force as the pressure to fold successfully into a unique three-dimensional structure.
