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Figure 1 shows a DNA base sequence. It also shows the effect of two mutations on this base sequence. Figure 2 shows DNA triplets that code for different amino acids. Original DNA base sequence A TTGGCGTGT Amino acid sequence ATTGGAGTGT GCCT Mutation 1 DNA base sequence Mutation 2 DNA base sequence A T TG GT A Figure 1 DNA triplets Amino acid GGT, GGC, GGA, GGG GTT, GTA, GTG, GTC Gly Val ATC, ATT, ATA lle TCC, TCT, TCA, TCG Ser СТС, СТТ, СТА, СТG Leu A Figure 2 (b) Complete Figure 1 to show the sequence of amino acids coded for by the original DNA base sequence. (c) Some gene mutations affect the amino acid sequence. Some mutations do not Use the information from Figure 1 and Figure 2 to explain (i) whether mutation 1 affects the amino acid sequence (ii) how mutation 2 could lead to the formation of a non-functional enzyme. (d) Gene mutations occur spontaneously. (i) During which part of the cell cycle are gene mutations most likely to occur? (ii) Suggest an explanation for your answer. ΛΟΛ

Figure 1 shows a DNA base sequence. It also shows the effect of two mutations on this base sequence. Figure 2 shows DNA triplets that code for different amino acids. Original DNA base sequence A TTGGCGTGT Amino acid sequence ATTGGAGTGT GCCT Mutation 1 DNA base sequence Mutation 2 DNA base sequence A T TG GT A Figure 1 DNA triplets Amino acid GGT, GGC, GGA, GGG GTT, GTA, GTG, GTC Gly Val ATC, ATT, ATA lle TCC, TCT, TCA, TCG Ser СТС, СТТ, СТА, СТG Leu A Figure 2 (b) Complete Figure 1 to show the sequence of amino acids coded for by the original DNA base sequence. (c) Some gene mutations affect the amino acid sequence. Some mutations do not Use the information from Figure 1 and Figure 2 to explain (i) whether mutation 1 affects the amino acid sequence (ii) how mutation 2 could lead to the formation of a non-functional enzyme. (d) Gene mutations occur spontaneously. (i) During which part of the cell cycle are gene mutations most likely to occur? (ii) Suggest an explanation for your answer. ΛΟΛ

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Figure 1 shows a DNA base sequence. It also shows the effect of two mutations on this base sequence. Figure 2 shows DNA triplets that code for different amino acids. Original DNA base sequence A TTGGCGTGT Amino acid sequence ATTGGAGTGT ATTG GCC I Mutation 1 DNA base sequence Mutation 2 DNA base sequence GT T A Figure 1 DNA triplets Amino acid GGT, GGC, GGA, GGG Gly GTT, GTA, GTG, GTC Val ATC, ATT, ATA lle ТCC, ТСТ, ТСА, ТСG СТС, СТТ, СТА, СТG Ser Leu A Figure 2 (b) Complete Figure 1 to show the sequence of amino acids coded for by the original DNA base sequence. (c) Some gene mutations affect the amino acid sequence. Some mutations do not Use the information from Figure 1 and Figure 2 to explain (i) whether mutation 1 affects the amino acid sequence (ii) how mutation 2 could lead to the formation of a non-functional enzyme. (d) Gene mutations occur spontaneously. (i) During which part of the cell cycle are gene mutations most likely to occur? (ii) Suggest an explanation for your answer. AQA J
Transcribed Image Text:Figure 1 shows a DNA base sequence. It also shows the effect of two mutations on this base sequence. Figure 2 shows DNA triplets that code for different amino acids. Original DNA base sequence A TTGGCGTGT Amino acid sequence ATTGGAGTGT ATTG GCC I Mutation 1 DNA base sequence Mutation 2 DNA base sequence GT T A Figure 1 DNA triplets Amino acid GGT, GGC, GGA, GGG Gly GTT, GTA, GTG, GTC Val ATC, ATT, ATA lle ТCC, ТСТ, ТСА, ТСG СТС, СТТ, СТА, СТG Ser Leu A Figure 2 (b) Complete Figure 1 to show the sequence of amino acids coded for by the original DNA base sequence. (c) Some gene mutations affect the amino acid sequence. Some mutations do not Use the information from Figure 1 and Figure 2 to explain (i) whether mutation 1 affects the amino acid sequence (ii) how mutation 2 could lead to the formation of a non-functional enzyme. (d) Gene mutations occur spontaneously. (i) During which part of the cell cycle are gene mutations most likely to occur? (ii) Suggest an explanation for your answer. AQA J
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