The phrase "a range of substitutions" is correct and usable in written English.
It can be used when discussing various options or alternatives available for replacement in a particular context, such as cooking, mathematics, or language.
Example: "In this recipe, you can use a range of substitutions for the main ingredient, depending on your dietary preferences."
Alternatives: "a variety of replacements" or "multiple alternatives".
The search was conducted for a range of substitution rates that varied from 1% to 3% per million years.
We used a strict molecular clock and a range of substitution rates estimated for other bird species (0.02-0.055 substitutions/site/Myr;; [ 13, 80, 81].
The series covers a range of substitution patterns, which will allow us to analyse the influence of substituent effects on the reaction.
A range of substitution rates in percentage per Myr was tested, from 0.03 to 5 for cyt b, from 0.5 to 10 for 16S.
A range of substitution rates of 0.65 1.00 % per Ma, which included the mtDNA substitution rates of most amphibians [ 46– 49], was used to calculate the divergence time among lineages in BEAST 1.5.4 [ 50].
This study examines 18 different parameterizations of to define "foundation models" of nucleotide and dinucleotide evolution, which are later combined to provide a range of substitution models describing RNA evolution (discussed later).
Because neither fossil nor paleogeographic calibration points were available, we calculated divergence times using an uncorrelated relaxed molecular clock and a range of substitution rates for the two mitochondrial fragments.
Thus, estimates of the age of expansion were plotted across a range of substitution rates, whereby it is assumed that the substitution rate of the coding ND1 gene is higher than the control region, which is common for salmonid fishes [ 45, 54], and supported by our haplotype diversities (i.e., twice the number of haplotypes for the ND-1 gene compared to the CR).
A range of alkyl substitutions resulted in virtually no effect on the 20-fold selectivity, although a 2,4,6-trimethyl substitution or replacement with a naphthylene group reduced selectivity dramatically (not a single analogue suffered from cross-resistance).
The phylogenetic reconstructions were robust to use of either NJ or ML, different outgroups or a range of different substitution models (results not shown).
