Analyses of gene expression with RNA-seequencing have also revealed expression differences during development between limnetic and benthic morphotypes (2), and also genetic differences consisting of SNPs.
Rannsóknir á genatjáningu með RNA-raðgreiningar aðferðum sýna mun á genatjáningu í fóstrum sviflægra og botnlægra afbrigða. Einnig sést munur á erfðasamsetningu, sem afhjúpast þegar stakar basabreytingar (single nucleotide polymorphisms: SNPs) eru greindar.