Name: Activity #20: DNA Structure Directions: You may need your textbook to identify the nucleotides 1. Color all of the phosphates Purple 2. Color all of the deoxyriboses RED 3. Color all of the Thymines Orange 4. Color all of the Adenines Blue 5. Color all of the Cytosines Brown 6. Color all of the Guanines Green 7. Label the phosphates, deoxyriboses, adenines, thymines, guanines, cytosines, covalent bonds between molecules (not elements), and hydrogen bonds Page 21 2 F Q +
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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