As also noted by others [11, 12] this approach is necessarily complicated by potential diagenetic alteration of resin components, by the unknown degree of evolutionary change in resin composition since biosynthesis of the original resin from which the amber was formed, and by the limits of analogy between the composition of modern resins and their fossiliferous analogues.
The degree of evolutionary change differs significantly among MYST gene families.
The ratio of the two parameters, Ka/Ks (a measure of selection strength), is defined as the degree of evolutionary change, normalized by random background mutation.
In addition, genetic correlations and genetic or developmental constraints could limit the degree of evolutionary change in the modeled brook charr populations.
In all possible Frankia pairs, significant differences were found in the degree of evolutionary change (i.e. Ka/Ks) between SP and MP (Mann–Whitney U test, P < 0.001) (Table 5).
In the remaining cases, the utilized intron boundaries in JEC21 were absent in some of the other three species, without nearby candidates for alternative splicing boundaries, however the high observed degree of evolutionary change within the sequence, generally including frameshift-causing indels, suggested that the sequence was ancestrally intronic.
Gene direction, which is important for function, has not been subjected to statistical testing for randomness and for the degree of evolutionary changes.
We found that machine-learning software was capable in most cases of accurately evaluating the degree of scientific sophistication in undergraduate majors' and nonmajors' written explanations of evolutionary change.
The more faithful the replication, the higher the degree of historical correlation, the more stable the product, the slower the rate of evolutionary change.
The molecular basis of evolutionary change.
We humans create rapid bursts of evolutionary change as well.
