However, the drought worsened over several weeks causing the gray mice to not be able to reproduce, and carry on the gene of the gray fur, and their population came close to extinction. On the other hand, the brown mice were able to survive and reproduce because the drought did not negatively effect them. The brown mice could carry on their genes and out number the gray mice. Since then the brown mice population increased it came up to 28 out of 39 mice, or 72%. The gray mice deceased by half and came to 11 out of 39 mice, or 28%.
