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.
The use of co-factors in catalysis:
Cofactors
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Cofactor |
Origin: |
Structure: |
Catalytic role: |
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Nicotinamide |
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Flavin nucleotides |
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Adenosine phosphates |
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Coenzyme A |
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Biotin |
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Coenzyme B12 |
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- Summaries the characteristics of co-factors using this table. Use both the textbook and other online sources such as Wikipedia to find the information.
- Under origin, report the precursor molecule e.g. “niacin” and also try to find the Vitamin X name for each compound, e.g. “Vitamin B3”.
- Under structure, identify the unique structural properties that allow each cofactor to perform the function it does
- Under catalytic role, indicate for which reactions are each of the cofactors important
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