Why do organisms have DNA?

Answer 1

The DNA in someones body carries out many functions, if you had no DNA you would have no traits physical or mental, in which you would probably die. You're DNA in skin cells also copy the cells structure and create another cell in the process of meiosis. But the biggest role DNA probably plays in the human body is probably sexual reproduction. Lets just assume that you are male, and you and your wife are wanting of a child, when you ejaculate your sperm into the woman, all of your sperm cells are carrying chromosomes which carry millions of your own DNA molecules. When the sperm move up through the falopian tube of the woman and into her uterus where the egg is stored, the the sperm cell with matching RNA (protein) pattern match, the sperm makes an acid that breaks through outer shell of egg, and it enters. Since the DNA of the mother is in her egg cell and all the DNA of the man is in his sperm, then the two cells combine with the DNA and creates a baby. Im 13 and hope this helped.

Answer 2

DNA, deoxyribonucleic acid, is not only the building block of life; it is currently used as a litmus test to determine whether or not something can be considered alive.

This is because DNA (and its cousin RNA, ribonucleic acid) are the only molecules we currently know of which share a particular property: the ability to duplicate itself, and thereby pass on a set of instructions to the next generation of cells. These instructions take the form of strings of amino acids, which in turn make up proteins, which become the enzymes that drive the clock of life.

Answer 3

Organisms have DNA because it is the genetic material that contains instructions for the development, functioning, growth, and reproduction of living organisms. DNA carries the genetic information that is passed from parent to offspring, providing the blueprint for the traits and characteristics of an organism.