As you saw in the video, rock pocket mice evolved to have dark-colored fur in certain habitats. In three to five sentences, explain how this trait increased in frequency in the population. Include the following key terms:_______. 1. fitness (or fit), 2.survival (or survive), 3. selection (or selective), 4. evolution (or evolve).

As per the theory of natural selection, an organism in a given population is able to survive only if it acquire traits or characteristics that make it fit for survival with in the persisting environmental conditions.

In case of rock pocket mice, dark colored fur is preferred over any other color of fur and hence offspring with dark colored fur are able to survive. With progression of generation, this trait has been adopted by mice.

Hence, option 3 is correct