Which of the following is TRUE about human DNA? a. A newt, onion, and amoeba all have smaller genomes than we humans have. b. Hu
man genes do not have non-coding regions of DNA within them. c. The genome size of an organism is a good measure of the complexity of that organism. d. More than 95% of our DNA is non-coding DNA. e. Bacteria have far more non-coding regions in their DNA than humans.
In humans only about 1% of DNA is coding, that is, only 1% of our genome is composed of exonic regions capable of synthesizing proteins. Teherefore, the other 99 percent is noncoding. When this was discovered the scientists thought that 99% of non-coding DNA was "junk" , however, now we know that some of the non-coding DNA is important to regualte gene expression.
