3' A TAT --IIL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 DNA C GU UGA UG G MRNA TRNA Amino Acid Met

Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
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the following is a strand of a DNA

**Diagram Description:**

The image displays a segment of DNA, a corresponding mRNA strand, a tRNA strand, and amino acids. The DNA sequence is as follows: 
3' A T A T _ _ _ T T T _ _ _ _ _ _ _ _ _ _ 

The given mRNA sequence is 
C G U _ _ _ _ _ _ _ _ _ _ _ _ U G A

The given tRNA sequence is U G G

The amino acid listed is Met (methionine).

"ATAT" is identified as the promoter sequence.

**Tasks:**

**a.** Using the genetic code provided in Figure 8.8, fill in the blanks to complete the segment of DNA shown.

**b.** Fill in the blanks to complete the sequence of amino acids coded for by this strand of DNA.

**c.** Write the code for the complementary strand of DNA completed in part (a).

**d.** What would be the effect if C were substituted for T at base 10?

**e.** What would be the effect if A were substituted for G at base 11?

**f.** What would be the effect if G were substituted for T at base 14?

**g.** What would be the effect if C were inserted between bases 9 and 10?

**h.** How would UV radiation affect this strand of DNA?

**i.** Identify a nonsense sequence in this strand of DNA.
Transcribed Image Text:**Diagram Description:** The image displays a segment of DNA, a corresponding mRNA strand, a tRNA strand, and amino acids. The DNA sequence is as follows: 3' A T A T _ _ _ T T T _ _ _ _ _ _ _ _ _ _ The given mRNA sequence is C G U _ _ _ _ _ _ _ _ _ _ _ _ U G A The given tRNA sequence is U G G The amino acid listed is Met (methionine). "ATAT" is identified as the promoter sequence. **Tasks:** **a.** Using the genetic code provided in Figure 8.8, fill in the blanks to complete the segment of DNA shown. **b.** Fill in the blanks to complete the sequence of amino acids coded for by this strand of DNA. **c.** Write the code for the complementary strand of DNA completed in part (a). **d.** What would be the effect if C were substituted for T at base 10? **e.** What would be the effect if A were substituted for G at base 11? **f.** What would be the effect if G were substituted for T at base 14? **g.** What would be the effect if C were inserted between bases 9 and 10? **h.** How would UV radiation affect this strand of DNA? **i.** Identify a nonsense sequence in this strand of DNA.
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