Final answer:
Red highlighting in match weights indicates a strong match between the target and reference sequences, often seen in DNA sequence alignment.
Step-by-step explanation:
In the context of match weights, red highlighting typically indicates a strong match between the target sequence and the reference sequence. It suggests a high degree of similarity between the two sequences, highlighting areas where they match closely.
For example, in DNA sequence alignment, red highlighting might indicate bases that are conserved across different species or between different individuals.
This visual cue helps researchers identify important regions and patterns in biological sequences.