Benzer's analysis of phage genomes included deletion mapping. Since recombination could not occur in the area of a deletion, an infection by two phage strains, one of which has a deletion and the other a point mutation, that results in no wild-type recombinants being produced indicates ________.
A)that the deletion includes the position of the point mutation in the same gene
B)that the deletion includes the position of the point mutation in a different gene
C)that the point mutation is dominant
D)that the point mutation is recessive
E)the distance between the two types of mutation

Question

Quizplus · Accepted Answer

If an infection by two phage strains results in no wild-type recombinants being produced, it means that recombination did not occur in the area of the deletion. Therefore, the position of the point mutation must be within the deleted region in the same gene. Choice A is the correct answer.

Benzer's Analysis of Phage Genomes Included Deletion Mapping