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(The Double Helix) DNA is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).
B. speeds up action potentials
Answer: Genotype
Explanation: The makeup of alleles determines the genotype, two alleles makes a genotype. The genotype is the genetic makeup of an organism.
