There are 61 mRNA codons that specify an amino acid, but only 45 tRNAs. This is best explained by the fact that A. some tRNAs have anticodons that recognize two or more different codons. B. the rules for base pairing between the third base of a codon and tRNA are flexible. C. many codons are never used, so the tRNAs that recognize them are dispensable. D. A and B only E. A, B, and C
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.
There are 61 mRNA codons that specify an amino acid, but only 45 tRNAs. This is best explained by the fact that
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A. some tRNAs have anticodons that recognize two or more different codons. |
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B. the rules for base pairing between the third base of a codon and tRNA are flexible. |
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C. many codons are never used, so the tRNAs that recognize them are dispensable. |
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D. A and B only |
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E. A, B, and C |
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