Which of the following is TRUE about human DNA? a. A newt, onion, and amoeba all have smaller genomes than we humans have. b. Human 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.

Question

Biology

Cecelia Bartlett

2 January, 15:44

Which of the following is TRUE about human DNA? a. A newt, onion, and amoeba all have smaller genomes than we humans have. b. Human 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.

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Answers (1)

Know the Answer?

Cory Moore · Answer 1

d. More than 95% of our DNA is non-coding DNA

Explanation:

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.