Kinds of Genes/Exons and Introns

denature

take away or alter natural qualities of

precipitate

cause a substance to be deposited in solid form from a solution

synthesis gene

tell how to make the protein or enzyme for a visible trait

"Housekeeping gene"

regulate the cell environment

timing gene

tell other genes when to turn on and when to shut off (oncogenes are mitosis timing genes); one gene can influence/turn on MANY synthesis and housekeeping genes

DNA model sides

one side has the gene, the other is just a template (non-sense or antisense) for reproduction

Exons

the segments of DNA that code (the genes)

introns

segments of DNA that do not code and is just spacer DNA

Intro info

understood to be old genes no longer activated (ancestors, no longer needed for survival, inconsequential) sometimes turned back on (babies with tails, whales with leg bones, birds born with boney tails and teeth); also known to be ancient virus DNA that was inserted into out DNA

intron percentage

49% of our DNA is this