PART 3: ELONGATION OF REPLICATION The figure below shows multiple snap shots of a replication fork elongating during replication. As the replication machinery progress along the template strands of the DNA, new DNA is synthesized. 1. On the figure below: a. Label all the 5' and 3' ends of the snap shots 2, 3 and 4. b. Label the leading and lagging strands in snap shot 2. c. Label all the enzymes represented by colorful shapes in the snap shots. Model 2 E. coli have circular chromosomes, Snap Shot #1 Snap Shot #2 Snap Shot #3 Snap Shot #4 3' DNA replication begins at a single location on the E. coli chromosome. This forms a replication bubble. ST 5' This replication bubble can be split down the middle into two replication forks. One of these forks is shown in detail below. 5' 49
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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