Shown is a segment of DNA with its promoter and terminator. Start and end of transcription are marked with an arrow. THe length of each part is marked with base sunderneath. What is the size of the protein made? Terminator Promoter7 Gene (DNA) AUG UAA Exon 1 Exon 2 Exon 3 Exon 4 Intron 1 15 Intron 3 14 Intron 2 15 27 30 19 27 30 30 O 37 amino acids O 114 amino acids O 53 amino acids O 68 amino acids

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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**Question 10**

Shown is a segment of DNA with its promoter and terminator. Start and end of transcription are marked with an arrow. The length of each part is marked with bases underneath. What is the size of the protein made?

**Diagram Explanation:**

- The sequence begins with a **Promoter** region, followed by various **Exons** and **Introns** before ending with a **Terminator**. 
- The numbers below each section represent the number of bases it contains.

**DNA Segment:**

1. **Promoter**: 15 bases
2. **Exon 1**: 27 bases (starts with AUG)
3. **Intron 1**: 15 bases
4. **Exon 2**: 30 bases
5. **Intron 2**: 17 bases
6. **Exon 3**: 27 bases
7. **Intron 3**: 14 bases
8. **Exon 4**: 30 bases (ends with UAA)
9. **Terminator**: 30 bases

**Multiple Choice Options:**

- 37 amino acids
- 114 amino acids
- 53 amino acids
- 68 amino acids

**Answer Calculation:**

To find the protein size, only exons are considered as they form the coding sequence. Total exon bases = 27 + 30 + 27 + 30 = 114 bases. Since three bases code for one amino acid, the protein size is 114 / 3 = 38 amino acids. However, the correct calculation excludes the stop codon (3 bases), so the answer is likely slightly less than 38, leading to an option closer to this number.
Transcribed Image Text:**Question 10** Shown is a segment of DNA with its promoter and terminator. Start and end of transcription are marked with an arrow. The length of each part is marked with bases underneath. What is the size of the protein made? **Diagram Explanation:** - The sequence begins with a **Promoter** region, followed by various **Exons** and **Introns** before ending with a **Terminator**. - The numbers below each section represent the number of bases it contains. **DNA Segment:** 1. **Promoter**: 15 bases 2. **Exon 1**: 27 bases (starts with AUG) 3. **Intron 1**: 15 bases 4. **Exon 2**: 30 bases 5. **Intron 2**: 17 bases 6. **Exon 3**: 27 bases 7. **Intron 3**: 14 bases 8. **Exon 4**: 30 bases (ends with UAA) 9. **Terminator**: 30 bases **Multiple Choice Options:** - 37 amino acids - 114 amino acids - 53 amino acids - 68 amino acids **Answer Calculation:** To find the protein size, only exons are considered as they form the coding sequence. Total exon bases = 27 + 30 + 27 + 30 = 114 bases. Since three bases code for one amino acid, the protein size is 114 / 3 = 38 amino acids. However, the correct calculation excludes the stop codon (3 bases), so the answer is likely slightly less than 38, leading to an option closer to this number.
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