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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Given the following nucleotide sequence in DNA: 5' —TCGTAGGAT— 3':

  1. (a) Determine the sequence of the complementary strand of DNA. Report this sequence by writing it from its 5' end to its 3' end.
  2. (b) Write the sequence (5'-3') for the strand of mRNA that would be complementary to the original strand of DNA.
  3. (c) Assuming that this sequence is part of the coding sequence for a protein and that it is properly lined up so that the first codon of this sequence begins with the 5' nucleotide of the mRNA, write the sequences for the three anti- codons that would be complementary to this strand of mRNA.
  4. (d) What sequence of amino acids is selected by this mRNA? (The complete genetic code is listed in several sites on the Internet.)

(a)

Interpretation Introduction

Interpretation:

The sequence of complementry strand of DNA has to be predicted.

Concept introduction: The nucelotide triplet that encodes an amino acids is called codon. Each group of three nucleotides encodes one amino acid. There are 20 amino acid present which are encoded by differnet codon. DNA sequence is always synthesized in 5' to 3' direction. The information present in DNA is transcribe into mRNA then translated by tRNA into desired sequence.

The rule of base pairing are: A purine base Adenine (A) always pair with pyrimidine base Thymine (T) and the pyrimidine base Cytosine (C) always pair with purine base Guanine (G). The complementary strand of DNA synthesized in 3' to 5' direction.

Explanation

Here, A purine base Adenine (A) always pair with pyrimidine base Thymine (T) and the pyrimidine base Cytosine (C) always pair with purine base Guanine (G). The complementary strand of DNA synthesized in 3' to 5' direction.

The sequence of complementry strand of DNA is determined by using base pair rule

(b)

Interpretation Introduction

Interpretation:

The sequence of mRNA that would be complementary to the original strand of DNA has to be predicted.

Concept introduction: The nucelotide triplet that encodes an amino acids is called codon. Each group of three nucleotides encodes one amino acid. There are 20 amino acid present which are encoded by differnet codon. DNA sequence is always synthesized in 5' to 3' direction. The information present in DNA is transcribe into mRNA then translated by tRNA into desired sequence.

The rule of base pairing are: A purine base Adenine (A) always pair with pyrimidine base Thymine (T) and the pyrimidine base Cytosine (C) always pair with purine base Guanine (G). The complementary strand of DNA synthesized in 3' to 5' direction.

(c)

Interpretation Introduction

Interpretation:

The sequence of three anticodons would be complementary to this strand of mRNA has to be predicted.

Concept introduction: The nucelotide triplet that encodes an amino acids is called codon. Each group of three nucleotides encodes one amino acid. There are 20 amino acid present which are encoded by differnet codon. DNA sequence is always synthesized in 5' to 3' direction. The information present in DNA is transcribe into mRNA then translated by tRNA into desired sequence.

The rule of base pairing are: A purine base Adenine (A) always pair with pyrimidine base Thymine (T) and the pyrimidine base Cytosine (C) always pair with purine base Guanine (G). The complementary strand of DNA synthesized in 3' to 5' direction.

(d)

Interpretation Introduction

Interpretation:

The sequence of amino acid selected by mRNA has to be predicted.

Concept introduction: The nucelotide triplet that encodes an amino acids is called codon. Each group of three nucleotides encodes one amino acid. There are 20 amino acid present which are encoded by differnet codon. DNA sequence is always synthesized in 5' to 3' direction. The information present in DNA is transcribe into mRNA then translated by tRNA into desired sequence.

The rule of base pairing are: A purine base Adenine (A) always pair with pyrimidine base Thymine (T) and the pyrimidine base Cytosine (C) always pair with purine base Guanine (G). The complementary strand of DNA synthesized in 3' to 5' direction.

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