Biology, 21.12.2019 05:31 nicoleh2015
An hfr strain of genotype: arg- lac- leu+ strs is mated with a recipient strain of genotype: arg+ lac+ leu- strr. the strs marker is known to be transferred very late. among the other three markers, leu+ is the last one to enter the f- cell. (note: all bacteria have the ability to utilize glucose as a sugar source. the alleles arg+and leu+ are necessary for synthesis of arginine and leucine respectively. the lac+ is necessary for utilization of lactose.)exconjugants are plated on a medium containing glucose, streptomycin, and arginine. the following results are obtained for 500 colonies isolated from these plates and tested for growth on various media: minimal medium (with glucose): 135 coloniesminimal medium (without glucose) + lactose: 85 coloniesminimal medium (without glucose) + lactose + arginine: 90 coloniesa) write a list of possible genotypes from those 500 colonies, and indicate the number in each genotype. show your work and circle your answer. provide a detailed explanation for each answer. b) calculate the recombination frequencies. show your work and circle your answer. provide a detailed explanation as to why those certain genotypes and numbers are used to calculate the recombination frequencies. i do not understand how the rf are calculated. c. ) what is the gene order? include the position of the origin of transfer.
Answers: 3
Biology, 22.06.2019 05:20
Match the description of each organism to the appropriate category
Answers: 2
Biology, 22.06.2019 12:30
Consider the equation s + o2 ? so2. what is the product? question 3 options: s so 2 s + so 2 o 2
Answers: 3
Biology, 22.06.2019 17:00
The data below simulate what happened to peppered moths in england after the industrial revolution which statement best describes the process that produced one of the emding populations of moths ?light colored moths were selected for on light colored trees
Answers: 3
Biology, 22.06.2019 18:00
After a group of researchers conducts a new experiment that has never been conducted before, what is the best way for other scientists to make sure that the data is real
Answers: 2
An hfr strain of genotype: arg- lac- leu+ strs is mated with a recipient strain of genotype: arg+...
Physics, 29.11.2021 18:50
Mathematics, 29.11.2021 18:50
Mathematics, 29.11.2021 18:50
Computers and Technology, 29.11.2021 18:50
Mathematics, 29.11.2021 18:50
Chemistry, 29.11.2021 18:50
World Languages, 29.11.2021 18:50
Biology, 29.11.2021 18:50
Mathematics, 29.11.2021 18:50