4. Mark the following statements about the genetic code as TRUE or FALSE: The genetic code is completely universal. One amino acid can be specified by more than one codon. Each codon can specify multiple amino acids. Each codon is 3 nucleotides long, yielding 64 different codons. There are three different "stop" codons each coding for a termination amino acid.
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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