Melting temperature (Tm) of 500 bases long DNA is defined as the temperature at which: a. All DNA molecules are single-stranded. b. The temperature at which 500 bp DNA molecules are destroyed. c. All DNA molecules are double-stranded. Half of the DNA is single-stranded, and half is double-stranded. Half of the DNA molecules are single-stranded, and half of the DNA molecules are double-stranded d. e.

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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.