200
e. A, B, & C are correct.
Which of the following is true regarding deoxyribonucleic acid (DNA)? a. Each deoxyribonucleic acid molecule is composed of two long chains of nucleotides arranged in a double helix. b. Genes are composed of deoxyribonucleic acid. c. DNA is composed of chemical building blocks called nucleotides. d. Only A and C are correct. e. A, B, & C are correct.