Question

Tyrosine can be encoded by both UAU and UAC. Imagine that these codons are recognized by different tRNAs, and that the UAU tRNA is expressed at five times the level of the UAC tRNA. What would be the consequence of this expression difference?

Answer 1

The consequence of the expression difference between UAU and UAC tRNAs encoding tyrosine is that the level of tyrosine incorporation into proteins will be higher when the UAU tRNA is present compared to when the UAC tRNA is present.

Step-by-step explanation:

The consequence of the expression difference between the UAU and UAC tRNAs in encoding tyrosine is that the level of tyrosine incorporation into proteins will be higher when the UAU tRNA is present compared to when the UAC tRNA is present. This is because the UAU tRNA is expressed at five times the level of the UAC tRNA. As a result, the UAU codon will be more frequently recognized and its corresponding tRNA will be more efficient in delivering tyrosine to the growing polypeptide chain during protein synthesis.

Answer 2

A codon can be described as sequences of three nucleotides which make up the genetic code. By decoding this information, specific proteins are made. For each genetic code on the mRNA, there are anticodons carried by tRNA. The nucleotides of the anti-codons are specific for the nucleotides present in the specific genetic code.

If UAU tRna is expressed five time more than the UAC tRna, then UAU-containing mRNAs will be translated at a faster rate than the UAC-containing mRNAs.