Which characteristics do all bony and jawless fish have in common? Check all that apply. backbone
swim bladder
scales
gills
bony skeleton

Gills, Scales, swim bladder, and backbone.

they all have a backbone.

Explanation:

linnaeus is the father of taxonomy, which is the system of classifying and naming organisms. one of his contributions was the development of a hierarchical system of classification of nature. today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.