Table 1 shows the proportions of students in level 1 cohorts who accepted or rejected evolution by their response to the question "Do you agree that the process of biological evolution lasting many millions of years has occurred in one form or another?" The proportion of evolution rejectors shows minor annual variations but no significant trend over the two decades surveyed.
Table 1 shows the proportions of students in the two level 4 groups (those who experienced post-level 1 evolution courses = high evolution; and those who experienced little if any post-level 1 evolution courses = low evolution) that claimed to accept or reject "biological evolution lasting many millions of years has occurred in one form or another".
In general, the requirements of prediction and correspondence pose a significant challenge for modeling in view of the complexity of biological systems and the evolution of many solutions to each environmental problem.
We argue that due to the complexity of biological evolution, many people are unlikely to have the knowledge and understanding to effectively comprehend the phenomenon, and must rely on science and scientists to provide explanations for and ramifications of evolution.
It might take longer, but biological evolution does provide many examples of independent solutions to the same adaptive problem; in this case, vertebrate flight.
However, preferential attachment seems a particularly unreasonable mechanism for the evolution of many biological systems.
This approach enables us to study the molecular adaptive evolution of many unique biological populations.
Among these mechanisms, exon shuffling and alternative exon splicing permit the modular assembly of new genes, and both greatly enhance eukaryotic protein diversity and may contribute to the evolution of many novel biological functions (Gilbert 1978; Patthy 1999, 2003; Liu and Grigoriev 2004; Keren et al. 2010).
Building on the theories of biological evolution developed by Charles Darwin, many 19th-century scholars sought to form a theory of unilinear cultural evolution.
The Tree of Life hypotheses can be studied and may have heuristic power (see Koonin and O'Malley, this special issue), but they are insufficient for describing all of biological evolution and indeed contradict many important observations.
