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Chapter 17: Q.17.56 (page 600)

The following sequence is a portion of the DNA template strand:

TGT GGG GTT ATT

a. Write the corresponding mRNA segment.

b. What are the anticodons of the tRNAs?

c. Write the three-letter and one-letter abbreviations for this segment in the peptide chain.

Short Answer

Expert verified

a. UGU GGG GUU AUU

b. ACA CCC CAA UAAA

c. Cys-Gly-Val-Iso and C-G-V-I

Step by step solution

01

Part (a) Step 1: Given Information

DNA template strand:

TGT GGG GTT ATT

Finding the corresponding mRNA segment.

02

Part (a) Step 2: Explanation

T is transformed to U when transcription takes place from the DNA template strand to mRNA.

Hence the corresponding mRNA segment is - UGU GGG GUU AUU

03

Part (b) Step 1: Given Information

DNA template strand:

TGT GGG GTT ATT

Finding the anticodons of the tRNAs

04

Part (b) Step 2: Explanation

The anticodons of the tRNAs are complementary to mRNA

Hence the anticodons of the tRNAs - ACA CCC CAA UAAA

05

Part (c) Step 1: Given Information

DNA template strand:

TGT GGG GTT ATT

Writing the three-letter and one-letter abbreviations for this segment in the peptide chain.

06

Part (c) Step 2: Explanation

The three-letter and one-letter abbreviations for this segment in the peptide chain is Cys-Gly-Val-Iso and C-G-V-I

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