1)The noncoding strand of a segment of DNA has the following sequence: 5' - CTG - 3'

What amino acid would be encoded by this segment? Write your answer out using the 3-letter abbreviation.  For example, if your answer was "Phe" you would write: Phe.

2)Within a long mRNA molecule, there is a codon near the middle that has the sequence 5' - UGG - 3'.  If there was a point mutation that resulted in the mRNA codon being changed to 5' - UGC - 3', what kind of mutation would this result in?

3)

You are studying the lac operon in E. coli.  You allow the bacteria to grow in a media that contains abundant lactose and glucose.  Fill in the missing words to match what you would expect to see under these conditions:

 

The amount of cAMP would be  highlow .

The lac repressor would be  boundnot bound to the DNA.

CAP would be  boundnot bound to the DNA.

The lac operon would be  expressed at high levelsexpressed at low levelsnot expressed at all .

4)The noncoding strand of a segment of DNA has the following sequence:5' - CTG - 3'

What is the sequence of the tRNA anticodon that would bind to the mRNA produced from this DNA sequence? Ignore wobble rules (if you are familiar with this concept) for this question.Write your answer out in the 5' to 3' direction using only 3 letters.  For example, if your answer was 5' - GCA - 3' you would write: GCA.

Answer rating: 100% (QA)

1 As we know that During transcription the RNA polymerase enzyme runs from the 3 to the 5 end on the non coding or template strand and gives the mRNA strand from 5 to 3 end According to the question T... View the full answer