Write a story about a group of survivors who develop unique physical mutations to survive a zombie apocalypse.
In this scenario, the zombie virus is not only transforming people into the undead but leads to the unexpected evolution of some survivors. Play with the idea of physical adaptations like heightened senses, increased strength or agility, and explore the potential consequences, both positive and negative. How would these changes affect social dynamics within the group and their chances of survival? This prompt invites exploration of adaptability, resilience, and the constant change in the fabric of society.