These mice once would have produced weak offspring but have now, due to evolution, brought into this world a new hybrid of mice. These hybrid mice were born strong and immune to poison warfarin (mice pesticides). Studies have shown that 50% of mice pups born from two different mice species are found to be sterile while these hybrid mice were found to be fertile.
Causes of the Adaptation
Scientists have found that a large amount of genes passed on from the parent caused the immunity to pesticides. While the house mice does not the Algerian mouse contains a natural gene that consists of a poison-resistant composition. This gene that was found within the Algerian mice were also responsible for vitamin K within the body.