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.
![High levels of glucose in the environment result in low levels of transcription of the lac operon. The reason for this is
glucose raises the levels of CAMP, which binds to the CAP protein to cause transcription repression
glucose prevents lactose from binding to the Lac Repressor
glucose lowers the levels of CAMP, which is necessary to activate the CAP protein
glucose binds to the Lac Repressor to cause it to bind to the operator site (lac O)
glucose lowers the levels of the CAP protein, which is necessary to stimulate transcription of the lac operon](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2105e7ee-bee9-46b0-a8f3-675baeaf4f1b%2Fbf1d59d5-0667-47ff-b8e1-f3d203b7ca1f%2Fazuadah_processed.jpeg&w=3840&q=75)
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