1) Explain how the Ames test can be used to detect potential mutagens? What are the limitations of this test?
2) The base pair sequence of a region of a gene coding for a polypeptide is:
Strand A: 5â C A C C T A A C T T A C T C A G* C T T A C G A A G T C T A C C C A G C G 3â
Strand B: 3â G T G G A T T G A A T G A G T C* G A A T G C T T C A G A T G G G T C G C 5â
A.) If this gene codes for a polypeptide that contains three Tyrosines (Tyr), which strand is transcribed? (1 pt)
B). What is the nucleotide of the mRNA transcribed from this DNA? (Note: there is no âstartâ codon. Simply start from the âappropriateâ end). You MUST label the appropriate 5 â and 3â ends.
C.) What is the polypeptide sequence of the protein translated from this mRNA?
D.) Hydroxylamine (HA) affects the bold-faced (*) base pair and causes a mutation during DNA replication. What is the amino acid sequence of the polypeptide coded by the mutant gene?
1) Explain how the Ames test can be used to detect potential mutagens? What are the limitations of this test?
2) The base pair sequence of a region of a gene coding for a polypeptide is:
Strand A: 5â C A C C T A A C T T A C T C A G* C T T A C G A A G T C T A C C C A G C G 3â
Strand B: 3â G T G G A T T G A A T G A G T C* G A A T G C T T C A G A T G G G T C G C 5â
A.) If this gene codes for a polypeptide that contains three Tyrosines (Tyr), which strand is transcribed? (1 pt)
B). What is the nucleotide of the mRNA transcribed from this DNA? (Note: there is no âstartâ codon. Simply start from the âappropriateâ end). You MUST label the appropriate 5 â and 3â ends.
C.) What is the polypeptide sequence of the protein translated from this mRNA?
D.) Hydroxylamine (HA) affects the bold-faced (*) base pair and causes a mutation during DNA replication. What is the amino acid sequence of the polypeptide coded by the mutant gene?
Related textbook solutions
Related questions
DNA Structure and Function Lab Report
Summary Questions
- Name the three major components of DNA.
- Which nitrogen bases pair within DNA?
- What is the difference between replication, transcription, andtranslation?
- Describe an advantage of genetic engineering.
- List three differences between DNA & RNA.
DNA | RNA |
- If the base sequence on one DNA strand is 3â CCTAGTTAG 5â, whatwill the sequence be on the other strand of the helix duringreplication?
DNA | 3â | C | C | T | A | G | T | T | A | G | 5â |
DNA | 5â | 3â |
- If 3â TGACCCATC 5â serves as the template for transcription,what will be the sequence of nitrogen bases on the newly formed RNAstrand?
DNA | 3â | T | G | A | C | C | C | A | T | C | 5â |
mRNA | 5â | 3â |
- If a mRNA sequence is 3â UAA 5â, give the amino acid coded forduring translation. Refer to the chart in Exercise 5 of theLab.
