Exposing Escherichia coli (e.coli) to ionizing radiation results in DNA damage. Say you perform an experiment and expose E. coli to increasing levels of ionizing radiation over time. After 180 minutes, all bacteria cells are found dead. 1. How do levels of LexA change over 180 minutes? Explain what is driving this change? 2. What changes in gene expression would occur over the course of the 180 minutes as a direct result of the changes in LexA levels? Detail how changing levels of LexA lead to such changes in gene expression.
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.
Exposing Escherichia coli (e.coli) to ionizing radiation results in DNA damage. Say you perform an experiment and expose E. coli to increasing levels of ionizing radiation over time. After 180 minutes, all bacteria cells are found dead.
1. How do levels of LexA change over 180 minutes? Explain what is driving this change?
2. What changes in gene expression would occur over the course of the 180 minutes as a direct result of the changes in LexA levels? Detail how changing levels of LexA lead to such changes in gene expression.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
