Final answer:
Strawberry plants can have identical DNA because they are propagated through a process called vegetative reproduction. This allows new plants to grow from pieces of the original plant, maintaining the same genetic material.
Step-by-step explanation:
Strawberry plants can have identical DNA because they are propagated through a process called vegetative reproduction, where new plants are grown from pieces of the original plant. This can be done through methods such as runners or stem cuttings.
During vegetative reproduction, a part of the original plant (such as a runner or stem) is used to grow a new plant. Since this part of the plant contains the same genetic material as the original plant, the new plant will also have the same DNA.
So even though multiple strawberry plants may have the same DNA, they can still exhibit variation in traits due to environmental factors and gene expression.