Describe4 marksStandard
In a study of two different taxa, researchers observed two distinct speciation events.
- Event A: A population of lizards on either side of a newly formed river canyon shows genetic divergence over generations, leading to two distinct species.
- Event B: A population of flowering plants in a single meadow develops two distinct groups that flower at different times of the year and do not interbreed, eventually forming separate species.
Describe the two types of speciation illustrated by these events, and explain the role of genetic isolation in each case.