"Only that Mitochondrial DNA doesn’t serve any purpose in cellular processes and it is theorized to be a four billion year left over from early single-cell evolution."
Mitochondrial DNA does have function - mutations in mitochondrial DNA lead to several diseases such as Kearns-Sayre Syndrome.
Here's a nice, easy to understand article about the difference between how scientists and a layman define theory:
"In layman’s terms, if something is said to be “just a theory,†it usually means that it is a mere guess, or is unproved. It might even lack credibility. But in scientific terms, a theory implies that something has been proven and is generally accepted as being true."
These kinds of things are more common than you think - it's basically a way to increase the cost of goods without actually increasing the price (less of the product at same price = greater profit).
My biggest complaint is dishwashing liquid: they give you less liquid (more sudsing action! same cleaning power! concentrated solution!) for the same price or slightly less, knowing full well people will squirt the same amount onto their dishes.
Mitochondrial DNA does have function - mutations in mitochondrial DNA lead to several diseases such as Kearns-Sayre Syndrome.
"In layman’s terms, if something is said to be “just a theory,†it usually means that it is a mere guess, or is unproved. It might even lack credibility. But in scientific terms, a theory implies that something has been proven and is generally accepted as being true."
Link
My biggest complaint is dishwashing liquid: they give you less liquid (more sudsing action! same cleaning power! concentrated solution!) for the same price or slightly less, knowing full well people will squirt the same amount onto their dishes.