You isolate two mutations in a bacteriophage. One causes larger plaques (l) and the other produces clear plaques (c). Previous mapping experiments have established that the genes responsible for these mutations are 10 map units apart. You mix phages with genotypes l+c+and l c;you use this mixture to infect bacterial cells. After collecting and plating the progeny phages, you observe a total of 1000 plaques. What will be the total number of plaques represented by the plaque type l+c+? Group of answer choices 900 450 100 50.