Which of the following is an invertebrate

invertebrates are an animal lacking a backbone, such as an arthropod, mollusk, annelid, coelenterate, etc. they can be spiders crickets ya know

Explanation:

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

i won't lie i don't know so go online and ask google thats what i do