Just so you know, some of the important known functions of "noncoding DNA" are [What's in Your Genome?] ....
- Genes for functional RNAs like ribosomal RNA, tRNA, and a host of others.
- Regulatory sequences that control expression of all genes.
- Part of intron sequences.
- Origins of replication;specific sites where DNA replication begins.
- SARS or scaffold attachment regions; sites required to organize chromatin.
- Functional transposons or "selfish DNA."
- Functional DNA and RNA viruses.
I realize that the kind of presentation shown in this video doesn't lend itself to a detailed description of noncoding DNA functions but surely we can do better than this? Why not say that scientists have determined that genes make up about 2% of our genome and about 8% contains information necessary for the proper functioning of genes and chromosomes? The rest, about 90%, is thought to be junk?
98% of your DNA is junk