Genes are segments of DNA molecules. Inserting, deleting, or substituting segments of DNA molecules can alter genes. An altered gene may be passed on to every cell that develops from it. The resulting features may help, harm, or have little or no effect on the offspring's success in its environment.
For Grades: 9-12
Learning Goal 4a
The genetic information encoded in DNA molecules provides instructions for assembling protein molecules.
Learning Goal 4b
The genetic information encoded in DNA molecules is virtually the same for all life forms.
Learning Goal 4c
Before a cell divides, the instructions are duplicated so that each of the two new cells gets all the necessary information for carrying on.