The phrase "a best alignment" is not correct in standard written English.
It is typically used in contexts where one is discussing the most optimal or effective alignment among options, but the article "a" is not appropriate here.
Example: "We need to find the best alignment for our project goals to ensure success."
Alternatives: "the optimal alignment" or "the most effective alignment".
Likewise, the score of a best alignment ending in an unconserved (intergenic) region cannot be calculated from the score of a best alignment ending in a conserved region (intron) of the two sequences.
Given this fact, the score of a best alignment ending in a conserved (intronic) region cannot be calculated from the score of a best alignment ending in an unconserved (intergenic) region of the input genomic sequences.
With this new block, the task is to search for a best alignment of the input sequences allowing the use of gaps, matches, mismatches and differences.
Consequently, the score of a best alignment ending in the first (resp. last) position of the searched gene can only be calculated in the presence of the codon ATG (resp. TAA, TAG, TGA) in both sequences.
Taking this into account, the score of a best alignment ending in the first position of a possible exon (resp. intron) can only be calculated in the presence of the dinucleotides AG (resp. GT) in both sequences.
The assignment of assembled sequences to chromosomes was done based on a best alignment and majority rule.
Bismark fully bisulfite converts sequence reads and maps each to bisulfite converted versions of the reference genome, with only reads producing a unique best alignment to a region being kept.
Using an informatics pipeline that allowed up to two mismatches in a read to map to the reference, we found that 43.9% of the B73 fragment reads had a single best alignment to the reference, 46.7% could be aligned to multiple positions, and 9.3% could not be aligned to the reference at all.
A read is considered to be mapped if it has a unique best alignment.
Aligned reads were further filtered for reads having a unique best alignment score.
Reads with a single best alignment or with equally good alignments to alternative transcripts of the same locus were considered uniquely aligned.
