For each of the E. coli strains containing the lacoperon alleles listed, indicate whether the strain isinducible, constitutive, or unable to expressβ-galactosidase and permease.a. I+ o+ Z− Y+/ I+ ocZ+ Y+b. I+ o+ Z+ Y+/ I− ocZ+ Y−c. I+ o+ Z− Y+/ I− ocZ+ Y−d. I−P− o+ Z+ Y−/ I+ P+ ocZ− Y+e. Iso+ Z+ Y+/ I− o+ Z+ Y−
Gene Interactions
When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.
Gene Expression
Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.
For each of the E. coli strains containing the lac
operon alleles listed, indicate whether the strain is
inducible, constitutive, or unable to express
β-galactosidase and permease.
a. I
+ o+ Z− Y+/ I+ oc
Z+ Y+
b. I
+ o+ Z+ Y+/ I− oc
Z+ Y−
c. I
+ o+ Z− Y+/ I− oc
Z+ Y−
d. I
−P− o+ Z+ Y−/ I+ P+ oc
Z− Y+
e. I
s
o+ Z+ Y+/ I− o+ Z+ Y−
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