A researcher was trying to determine whether two molecules (A and B) were corepressors or inducers in their respective operon systems. Data was collected regarding the levels of protein and the amount of gene transcription for the genes in their respectiver operons. The data is shown below. Level of protein Transcription of gene 1 Transcription of gene 2 low Molecule A High low Low high high Molecule B High high high Low low low a) Determine whether molecule A and Molecule B are inducers or corepressors. Justify your answer. b) Identify which system resembles the lac operon system and which resembles the trp operon system.
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.
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