What carries the genetic information that is passed from parents to offspring?, Deoxyribonucleic Acid, DNA, What is the name of the basic unit of heredity?, Gene, Genes, What threadlike structures are made up of DNA and proteins?, Chromosomes, Chromosome, What enzyme helps unzip the DNA double helix during DNA replication?, Helicase, Helicases, What are the building blocks of DNA called that pair up to form the rungs of the DNA ladder?, Nitrogenous bases, Nitrogenous base.

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