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FreeBayes detection capacity

Hello,

I'm currently utilizing FreeBayes for variant detection with reads generated through Oxford Nanopore technology. However, I've encountered an issue where not all known variants (SNPs and insertions) that I expect to detect are being generated. Below is the command and parameters I'm using:

freebayes -f path/ref_sequence -L path/bam_file --vcf path/output_vcf_file --ploidy 2 --min-alternate-fraction 0.05

It's worth noting that my BAM files were generated using Minimap2. I'm curious if there's a method to enhance FreeBayes' capability for variant detection. Any insights would be greatly appreciated. NB1 : I'm working on fungus NB2 : it's important for me to work with freebayes , that's why I'm looking for a solution

reads freebayes long

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