The sequence of a polypeptide is determined by the order of codons that specify the amino acids in the polypeptide. How many different sequences of codons can specify the polypeptide sequence methionine-histidine-lysine? (Use the table to fınd the number of possibilities.) SECOND BASE UCU ucc Serine (Ser) UUUL UGU UAU UAC Tyrosine (Tyr) UAA -Stop codon UAG -Stop codon Cysteine (Cys) UGA -Stop codon uGa -Tryptophan (Trp) Phenylalanine (Phe) Uuc UUAL Leucine (Leu) Uua UCA uca CU Cuc CUA FLeucine (Leu) Cu CAU CAC - Histidine (His) CCA Proline (Pro) ca CAA CAGGlutamine (Gin) cac CGA FArginine (Arg) cua AUU AUC Fisoleucine (le) AAU AAC AGU AGCSerine (Ser) Asparagine (Asn) ACA Threonine (Thr) ACG AAA AAGFLysine (Lys) AUA Methionine (Met) AUG Start codon AGGArginine (Arg) GUU) GUC QuA Valine (Val) GUG) GCU acC - Alanine (Ala) GGU GAAspartic acid (Asp) aac Giycine (Gly) GCA GAAL GGA GAG Glutamic acid (Glu) Gaa) 8 1 4 THIRD BASE FIRST BASE
The sequence of a polypeptide is determined by the order of codons that specify the amino acids in the polypeptide. How many different sequences of codons can specify the polypeptide sequence methionine-histidine-lysine? (Use the table to fınd the number of possibilities.) SECOND BASE UCU ucc Serine (Ser) UUUL UGU UAU UAC Tyrosine (Tyr) UAA -Stop codon UAG -Stop codon Cysteine (Cys) UGA -Stop codon uGa -Tryptophan (Trp) Phenylalanine (Phe) Uuc UUAL Leucine (Leu) Uua UCA uca CU Cuc CUA FLeucine (Leu) Cu CAU CAC - Histidine (His) CCA Proline (Pro) ca CAA CAGGlutamine (Gin) cac CGA FArginine (Arg) cua AUU AUC Fisoleucine (le) AAU AAC AGU AGCSerine (Ser) Asparagine (Asn) ACA Threonine (Thr) ACG AAA AAGFLysine (Lys) AUA Methionine (Met) AUG Start codon AGGArginine (Arg) GUU) GUC QuA Valine (Val) GUG) GCU acC - Alanine (Ala) GGU GAAspartic acid (Asp) aac Giycine (Gly) GCA GAAL GGA GAG Glutamic acid (Glu) Gaa) 8 1 4 THIRD BASE FIRST BASE
Human Anatomy & Physiology (11th Edition)
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Author:Elaine N. Marieb, Katja N. Hoehn
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Protein Expression
The method by which living organisms synthesize proteins and further modify and regulate them is called protein expression. Protein expression plays a significant role in several types of research and is highly utilized in molecular biology, biochemistry, and protein research laboratories.
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![**Transcription for Educational Website**
The sequence of a polypeptide is determined by the order of codons that specify the amino acids in the polypeptide. How many different sequences of codons can specify the polypeptide sequence methionine-histidine-lysine? (Use the table to find the number of possibilities.)
**Codon Table Explanation:**
The table provided maps each set of three nucleotides (codons) to their corresponding amino acids. It is arranged by the first, second, and third bases of the codon.
- **First Base (Left Column):** U, C, A, G
- **Second Base (Top Row):** U, C, A, G
- **Third Base (Right Column):** U, C, A, G
**Codons for the Specific Amino Acids:**
- **Methionine (Met):** AUG
- **Histidine (His):** CAU, CAC
- **Lysine (Lys):** AAA, AAG
To determine the number of different sequences of codons for the methionine-histidine-lysine sequence, consider the following:
- There is only one codon for Methionine: AUG
- There are two codons for Histidine: CAU or CAC
- There are two codons for Lysine: AAA or AAG
Using combinations, calculate the number of possibilities:
\[ 1 \times 2 \times 2 = 4 \]
Thus, there are **4 different sequences** that can specify the polypeptide sequence methionine-histidine-lysine.
**Answer Choices:**
- ○ 8
- ○ 1
- ○ 2
- ● 4](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F83052e51-0d06-4d9f-90a9-2db071b1e45c%2F942613ca-4d4b-410c-84b4-5e324bfa4170%2Fpt0al1j_processed.png&w=3840&q=75)
Transcribed Image Text:**Transcription for Educational Website**
The sequence of a polypeptide is determined by the order of codons that specify the amino acids in the polypeptide. How many different sequences of codons can specify the polypeptide sequence methionine-histidine-lysine? (Use the table to find the number of possibilities.)
**Codon Table Explanation:**
The table provided maps each set of three nucleotides (codons) to their corresponding amino acids. It is arranged by the first, second, and third bases of the codon.
- **First Base (Left Column):** U, C, A, G
- **Second Base (Top Row):** U, C, A, G
- **Third Base (Right Column):** U, C, A, G
**Codons for the Specific Amino Acids:**
- **Methionine (Met):** AUG
- **Histidine (His):** CAU, CAC
- **Lysine (Lys):** AAA, AAG
To determine the number of different sequences of codons for the methionine-histidine-lysine sequence, consider the following:
- There is only one codon for Methionine: AUG
- There are two codons for Histidine: CAU or CAC
- There are two codons for Lysine: AAA or AAG
Using combinations, calculate the number of possibilities:
\[ 1 \times 2 \times 2 = 4 \]
Thus, there are **4 different sequences** that can specify the polypeptide sequence methionine-histidine-lysine.
**Answer Choices:**
- ○ 8
- ○ 1
- ○ 2
- ● 4
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