Apopulation of black cats has been interbreeding. however, in one litter, a sole gray kitten is born. the successive generations now have a few gray cats. which mechanism is responsible for introducing this new allele in the cat population?

gene selection

gene mutation

gene flow

genetic drift

the truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey.