Meanings of relaxed selection in English

Plastid genomes of nonphotosynthetic plants represent a perfect model for studying evolution under relaxed selection pressure.

Flight loss was associated with relaxed selection signatures in splicing genes, mirroring the results for flight evolution.

Genes involved in the social stage evolved more rapidly than others, consistent with either relaxed selection or accelerated evolution due to social conflict.

We studied genome-wide allele frequency changes from generation 40 to 53 using genome-wide genotypes from directional and relaxed selection lines.