I can’t seem to understand the difference between these 3.
In: Biology
DNA is the molecule. Like you have water molecules, you have DNA molecules. They’re just a hell of a lot bigger.
The genome is the collection of all genes.
A gene is the thing that codes for a protein and all that.
DNA: A chain like molecule made of four different kinds of molecules (Nucleotides). The sequence of these different nucleotides works like a code.
Gene: A section of the DNA that can be “transcribed” into an RNA. A gene starts with something called a promotor. That is a specific sequence of nucleotides that enzymes can detect. They bind to the promotor and start walking down the DNA, reading the code and creating a copy until they reach a stop singal. That copy is also a chain like molecule, but its not DNA, its RNA. RNA and DNA are very similar, but there are a few chemical differences. These RNA molecules can be used to generate proteins (they acts as a “blueprint”), or they can do other things like regulating other genes.
Genome: the collection of all genes in an organism
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