Ijust need someone to check my answer

which characteristic is shared by all arthropods?

all arthropods have six legs.

all arthropods live on land.

all arthropods have exoskeletons.

all arthropods are insects.

not sure but try c two haploid cells

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