Promoters and enhancers are important regulatory sequences for many eukaryotic protein- genes. Which of the following characteristics do these different sequences have in common 1.Understood by the cell as double-stranded DNA. 2.Mutations in their sequence may result in increased gene expression. 3.Contain binding sites for proteins. 4.Must be upstream of the gene they influence. 1 and 3 4 only 2 and 4

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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.