Biology, 15.04.2020 02:12 Angelanova69134
Most of what we know about the lac operon of E. coli has come from genetic analysis of various mutants. In the following list are the genotypes of six strains of E. coli. For each strain, indicate whether the lacZ gene product (B-gal) will be expressed in the presence of lactose and whether it will be expressed in the absence of lactose. Explain your reasoning in each case. (A "plus" superscript indicates normal functioning part of operon or repressor gene, a "minus" indicates loss of function, the P region is where the RNA polymerase binds, "Oc" means "operator-constitutive" mutant which means that the operator is mutated such that the repressor can’t bind, and "Is" means "super-repressor" which binds the operator, but doesn’t bind lactose (so never dissociates from the operator).
Answers: 2
Biology, 21.06.2019 13:00
Biologists use the system of binomial nomenclature developed by linnaeus to assign scientific names to known living organisms which area of society or strengthened by money is contribution to science
Answers: 3
Biology, 22.06.2019 05:00
Match each term to its best definition? sedimentary depositional enviornment
Answers: 1
Biology, 22.06.2019 22:00
American scientist, linus pauling, was one of many scientists racing to discover the molecular structure of dna. pauling initially thought that the molecule was a triple helix. later, james watson and francis crick unveiled their double helix model, which turned out to be an accurate description of the molecule's shape. why did watson and crick succeed when pauling failed?
Answers: 1
Most of what we know about the lac operon of E. coli has come from genetic analysis of various mutan...
Mathematics, 05.11.2020 03:00
History, 05.11.2020 03:00
Chemistry, 05.11.2020 03:00
English, 05.11.2020 03:00
Mathematics, 05.11.2020 03:00
Arts, 05.11.2020 03:00
Mathematics, 05.11.2020 03:00
Mathematics, 05.11.2020 03:00
Mathematics, 05.11.2020 03:00
Mathematics, 05.11.2020 03:00
History, 05.11.2020 03:00
English, 05.11.2020 03:00
Mathematics, 05.11.2020 03:00