Add labels to the figure that follows, which illustrates the three steps required for speciation to occur.

Verified step by step guidance

1. Identify the initial population of organisms, which is represented by the group of yellow insects on the left side of the figure.
2. Recognize the occurrence of a geographic barrier that separates the initial population into two distinct groups. This is depicted by the split in the pathway and the dashed line indicating the barrier.
3. Understand that over time, the separated populations undergo genetic divergence due to the lack of gene flow between them. This is shown by the two diverging paths leading to different colored insects.
4. Note that the genetic differences accumulate, leading to the formation of two distinct species. This is represented by the green and orange insects on the right side of the figure.
5. Label the steps in the figure as follows: Step 1 - Initial population, Step 2 - Geographic isolation, Step 3 - Genetic divergence and formation of new species.