inbred strain
individuals of a particular species which are nearly identical to each other in genotype due to long inbreeding
en-GB/ˌɪnˈbɹɛd ˈstɹeɪn/
en-US/ˈɪnˌbɹɛd ˈstɹeɪn/
individuals of a particular species which are nearly identical to each other in genotype due to long inbreeding