Question: Mutations in tRNA genes can create tRNAs that recognize stop codons. Because stop codons are sometimes called nonsense codons, the types of mutations that affect

Mutations in tRNA genes can create tRNAs that recognize stop codons. Because stop codons are sometimes called nonsense codons, the types of mutations that affect tRNAs are called nonsense suppressors. For example, a normal tRNA<,lv has an anticodon sequence CCU that recognizes a glycine codon in mRNA (GGA) and puts in a glycine during translation. However, a mutation in the gene that encodes tRNAGly could change the anticodon to ACU. This mutant tRNA(,l> would still carry glycine, but it would recognize the stop codon UGA. Would this mutation affect attenuation of the trp operon? Explain why or why not. Note: To answer this question, you need to look carefully at Figure 14.12 and see if you can identify any stop codons that may exist beyond the UGA stop codon that is found after region 1.

Step by Step Solution

★★★★★

3.27 Rating (159 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

If you look very carefully at the RNA sequence in Figure 1412 you will notice that a UAA c... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

894-M-S-B-G (1084).docx

120 KBs Word File

Students Have Also Explored These Related Biology Questions!

In bacteria, researchers have isolated strains that carry mutations within tRNA genes. These mutations can change the sequence of the anticodon. For example, a normal tRNAlrpgene would encode a tRNA...

Two techniques commonly used to study the expression patterns of genes that play a role in development are Northern blotting and in situ hybridization. As described in Chapter 20, Northern blotting...

Mutations may have an effect on the expression of the lac operon and the trp operon. Would the following mutations have a cis- or trans-effect on the expression of the protein-encoding genes in the...

3 5 . What of the following is a nonpreventable cause of cancer? a . Cigarette smoke b . UV radiation c . Viruses d . Diet e . Hereditary predisposition 3 6 . Anaphase - promoting complex, or...

Laws of nature, natural phenomena, and abstract ideas are not patentable. Thomas, Justice Facts: After substantial research and expenditure of money and resources, Myriad Genetics, Inc. (Myriad)...

DNA VS. CDNA Case: DNAs informational sequences and processes occur naturally within cells. Scientists can, however, extract DNA from cells using well-known laboratory methods. These methods allow...

Q1 - Title of Study (No more than 15 words ) Q2- Choose 5 keywords that describe this study Q3- Abstract (100 - 150 words ) , The abstracts should include the following: i) aim, ii) methodology, iii)...

Association for Molecular Pathology v. Myriad Genetics, Inc. 133 S.Ct. 2107, 2013 U.S. Lexis 4540 (2013) Supreme Court of the United States Laws of nature, natural phenomena, and abstract ideas are...

DNA VS. CDNA Case: DNA's informational sequences and processes occur naturally within cells. Scientists can,however, extract DNA from cells using well-known laboratory methods. These methodsallow...

Facts After substantial research and expenditure of money and resources, Myriad Genetics, Inc. (Myriad), discovered the precise location and sequence of two naturally occurring segments of...

What if the material cost remains are the original dollar 0.30 the rental cost is decreased $300 and he sold 3,000 people what would be the resulting profit?

Sonic Corp. runs the largest chain of drive-in restaurants in the United States. In its 10-K filed on November 25, 2013, Sonic reported the following changes in the Allowance for Doubtful Accounts...

7 Tru Developers, Incorporated, sells plots of land for industrial development. Tru recognizes income for financial reporting purposes in the year it sells the plots. For some of the plots sold this...

In recombinant chromosomes, where is gene conversion likely to take place: near the breakpoint or far away from the breakpoint? Explain.

What events does the RecA protein facilitate?

According to the double-strand break model, does gene conversion necessarily involve DNA mismatch repair? Explain.

please write bet keyboard or clear handwrittin 1) (30 p.) Acme Molding is examining five alternatives for a piece of material handling equipment. Each has an expected life of 8 years with no salvage...

Three possible outcomes emanate from each gate. They are Multiple Choice O O O O reduce scope, kill, increase scope continue, kill, enhance allocate resources, reduce resources, cancel proceed,...

for question with dropdowns 1. 82000/92400/50400/33600 2.120960/201600/84000/80640 3. posion pill/ a proxy/ a takeover/ dilution 4. proxy/ preemptive right 5.75600/100800/101800/151200 1. Rights and...