Final answer:
Gene redundancy refers to the phenomenon where multiple genes perform the same or similar function in an organism, providing backup or alternative mechanisms to ensure the organism's survival and normal development.
Step-by-step explanation:
Gene redundancy refers to the phenomenon where multiple genes perform the same or similar function in an organism, providing backup or alternative mechanisms to ensure the organism's survival and normal development. In the case of the given options, both Harebell plants and Snapdragon plants show gene redundancy. These plants have duplicate or redundant genes that perform the same function, allowing for genetic variation and adaptation in their respective environments. Therefore, the correct answer is 3) Both Harebell and Snapdragon plants.