Someone ! which best describes the structure of dna? a. alleles held together by genes b. nucleic acids arranged in a double helix c. chromosomes linked in a loop d. a tetrad with two sister chromatids

b. read the phase at the intersection of any given temperature and pressure.

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