In a tyr E coli cell 9needs tyrosine homologous recombinatio

In a tyr^- E. coli cell 9needs tyrosine), homologous recombination between a tyr^+ allele on DNA introduced by a transducing phage and the homologous sequence in the chromosome fails to result in transfer of the tyr^+ allele to the chromosome. A DNA heteroduplex region, however, is left in the chromosomal DNA. The cell undergoes cell division. The predicted fates and genotypes of the two daughter cells on tyrosine-supplemented medium are: one tyr-lives, the other tyr+ dies both live and are tyr+ both live and are tyr- both live, one try+, the other tyr- one try +lives, the other tyr-dies

Solution

Answer:-Both kive, one tyr+ the other tyr-.

Explanation :- Since tyr- is mutant and grows only in tyrosine supplemented medium while tje other is auxotroph and can grow even in presence or absence of tytosine.