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:
DNA is composed of complex chemical substances.
The correct answer is: DNA
- The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T).
- Human DNA consists of about 3 billion bases, and more than 99 percent of those bases are the same in all people
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