★Mastery Matters
TEKS B.5DMisconception 2: DNA-Only Genetic Blueprint

Task 1

Compare DNA and RNA

Drag each statement into the Venn diagram: DNA, RNA, or where they overlap (Both).

💡 Memory Refresh: In human and bacterial cells, DNA holds the permanent master blueprint, while RNA acts as a temporary helper molecule (like mRNA). But acellular viruses break this rule — many viruses use RNA as their main, permanent genome!

DNARNABoth
Made of a sugar-phosphate backbone and nitrogen bases
Can store genetic instructions that code for proteins
Can serve as a complete genome for a virus
Sugar is deoxyribose
Contains the nitrogen base Thymine (T)
Usually double-stranded (a double helix)
Sugar is ribose
Contains the nitrogen base Uracil (U) (replaces Thymine)
Usually single-stranded
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