Biology
Grade-9
Easy
Question
Identify the diagram in which genes are made up of a complex chemical substance called ______.
- RNA
- mRNA
- PNA
- DNA
Hint:
Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions.
The correct answer is: DNA
- Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth, and reproduction of all known organisms and many viruses.
- DNA and ribonucleic acid are nucleic acids.
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