How is the expression of genes controlled at the chromosomal level? A. DNA can synthesize extra histones as needed B. DNA can either be condensed into heterochromatin or decondensed into euchromatin C. DNA can be unwound into euchromatin to reduce the level of expression D. The expression of DNA can only be controlled at the transcriptional level E. DNA is spontaneously deleted from a chromosome if not needed
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.
How is the expression of genes controlled at the chromosomal level?
| A. |
DNA can synthesize extra histones as needed |
|
| B. |
DNA can either be condensed into heterochromatin or decondensed into euchromatin
|
|
| C. |
DNA can be unwound into euchromatin to reduce the level of expression |
|
| D. |
The expression of DNA can only be controlled at the transcriptional level |
|
| E. |
DNA is spontaneously deleted from a chromosome if not needed |
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