Respuesta :
The point mutations that are not within the within the boundary in T4 r11
are r43, r65, r73, r61, r47, r64,r59,r707 r62 and r71,
What is point mutation?
The mutation occurring in a genome when a single base pair is added or deleted while most point mutations are benign they can also have various functional consequences, including changes in gene expression or alterations in encoded proteins.
The T4 rII system is an experimental system developed in the 1950s by Seymour Benzer for studying the substructure of the gene. The experimental system is based on genetic crosses of various mutant strains of the E. coli-infecting virus bacteriophage T4.
By analyzing the recombination frequency between several r strains, Benzer was able to map the substructure of a single gene because he could produce numerous distinct r mutants. Even if there is a slim possibility that any mating pair of rII mutants will successfully recombine, a single petri dish might serve as the starting point for millions of experiments at simultaneously. The K12 () strain of E. coli, which was tolerant to wild type T4 but not to r mutants, was used to quickly screen them. [2]
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