prototrophic HFR strain and an Streptomycin Resistant gly- tyr- ala- pro- ser- auxotrophic strain. Thefollowing results are obtained:Numbers of colonies of each Genotype over timeMinutes before mating interruptedcolony102030 40506060TO708880genotypegly+00 00380375 392 401tyr+98396398389395401403 399ala+00O00200398406prot079301287304304 298297ser+0140300301298287 2893011. Which gene is transferred from donor to recipient first?2.a. glyb. tyrC.alad. proe. serWhich gene is transferred from donor to recipient last?a. glyb. tyrC.alad. proe.ser3. Which of the following is true?a. Gly is closer to ala than pro is to serb. The StrpR colony type Tyr+ Pro+ Ser- would be expected to be the least abundant if thegene order was tyr pro serC The StrpR colony type Tyr+ Pro+ Ser- would be expected to be the least abundant if thegene order was tyr ser prod. The StrpR colony type Tyr+ Pro+ Ser- would be expected to be the least abundant if thegen order was pro tyr ser

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Answered: prototrophic HFR strain and an…

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter17: Bacterial And Viral Genetics

Section: Chapter Questions

Problem 1ITD

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In Escherichia coli, four different Hfr strains, derived from the same F* strains, were mated with F strains auxotrophic for a number of nutritional requirements (Arg Bio Cys Trp Gal His Lac Mal Xyl Leu Met). Matings were interrupted at various intervals and cells were plated on minimal medium supplemented with particular nutrients to test for gene transfer. The following results show the time of entry for each of the genes in four different Hfr strains. Table 1: Time-of-Entry Mapping Data* Hfr strains Genes lac" his" arg' bio 9. Cys gal" trp' 5 11.5 2.5 mal" xyl" leu met Hfr 1 Hfr 2 Hfr 3 Hfr 4 6.5 3.5 11 15 15 4 6. 17.5 5 14.5 3 20 * The numbers denote the number of minutes elapsed before a gene enters the F cells. Draw a circular map of E. coli chromosome.
Determine the coefficient of coincidence and the interference
Please answer asap and type your answer and palgarism should not be found
24
Eight mutant bacteriophage strains cannot lyse a certain type of bacteria that can be lysed by wild-type bacteriaphages. The mutant strains were allawed to infect the bacteria in a complementation test. A "+ indicates that lysis occurred with coinfection.Aindicates that lysis did not occur. GKWTMAQC G -++|+ ++l+ - K. - + - ++ +| + -+| - |-++ + + + M - + + + A cistron is defined by no complementation in the Ciş : configuration. Haw many genes are controlling lysis in this bacteriophage? (Use a number not a word in the space) 3 Which of the following strains below are defective in the same gene as strain Q? Answer yes if the strain is defective or no if it is not. Strain Defective A N/A
Eight mutant bacteriophage strains cannot lyse a certain type of bacteria that can be lysed by wild-type bacteriophages. The mutant strains were allowed to infect the bacteria in a complementation test. A "+" indicates that lysis occurred with coinfection. A "-" indicates that lysis did not occur. GKWTMAQC G- ++++- K W T M A Q C - + +++ - ++++ - + + - + - + - - + + + A cistron is defined by no complementation in the How many genes are controlling lysis in this bacteriophage? (Use a number not a word in the space) configuration.
data from several complementation experiments, involving rapid-lysis mutations in genes rIIA and rIIB of bacteriaphage. The strain designated L51 is known to have a mutation in rIIB. Using the table below, list which groups of mutations are in the rIIA gene and which groups are in the rIIB gene.
Conjugation depends on direct cell-to-cell contactbetween a donor F+ carrying either a conjugative________ (the F plasmid) or an integrated conjugativeelement (as in Hfr strains), and a recipient lacking suchan element (F−).
Give typed explanation
In Figure 6-13, explain at the protein level why this heterokaryon can grow on minimal medium
Eight mutant bacteriophage strains cannot lyse a certain type of bacteria that can be lysed by wild-type bacteriophages. The mutant strains were allowed to infect the bacteria in a complementation test. A +' indicates that lysis occurred with coinfection. Aindicates that lysis did not occur. GKWTMAGC +++ +++ - -+ -| ++ + ++ + - + + M -|- +1+ A + + A cistron is defined by no complementation in the : configuration. How many genes are controlling lysis in this bacteriophage? (Use a number not a word in the space) Which of the following strains below are defective in the same gene as strain Q? Answer yes if the strain is defective or no if it is not. Strain Defective K. W A. N/A
I know the answer is e but can you thoroughly explain the answer choices? like what does constitutive, inducible, expressed mean? and how do these conditions come about?

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