Which of the following statements correctly identifies whether the indicated mutation is a transition or transversion mutation? A. A=T to G≡C is a transversion mutation. B. C≡G to A=T is a transversion mutation. C. T=A to C≡G is a transversion mutation. D. G≡C to T=A is a transition mutation.
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Which of the following statements correctly identifies whether the indicated mutation is a transition or transversion mutation?
A.
A=T to G≡C is a transversion mutation.
B.
C≡G to A=T is a transversion mutation.
C.
T=A to C≡G is a transversion mutation.
D.
G≡C to T=A is a transition mutation.
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- In the paper we read at the beginning of the term the coat color differences in the beach mice were driven by change in the melanocortin-1 (MCR-1) gene between the color morphs. Based on this information what can you conclude about the mutation causing the color change? a. It is a nonsynonymous substitution. b. The mutation is considered silent. c. The mutation is a transition. d. It is a synonymous substitution.What type of mutation causes the "mutant" variety of the PTC gene? a A point mutation which lead to a nonsense mutation b A addition mutation which lead to a frameshift c A substitution mutation which lead to a missense mutation d A deletion mutation which lead to a SNP mutationWhich of the following is an example of a somatic mutation? a. A mutation in an embryonic muscle cell b. A mutation in a sperm cell c. A mutation in an adult nerve cell The somatic cells are all cells of the body excluding the d. Both a and c are examples of somatic mutations.
- The word mutation is generally considered to be negative. However, is there a positive side to mutations? Briefly explain your answer.A genetic researcher notices that individuals with a particular genetic disease have a shortened version of key protein involved in the diseased biochemical pathway. Which of the following mutations is most likely to result in the premature termination of protein synthesis? A. The disease is caused by a silent mutation. B. The disease is caused by a frameshift mutation. C. The disease is caused by a missense mutation. D. The disease is caused by a nonsense mutation.Explain the difference between a gain-of-functionmutation and a dominant-negative mutation. Why areboth these types of mutation usually dominant?
- Which of the following mutations is NOT a point mutation? A. Missense mutation B. Insertion mutation C. Nonsense mutation D. Silent mutationWhich of the following types of mutations is represented in Table 1? a.) Insertions b.)Deletions c.) Point mutation d.) Transversion e.) TransitionWhich of the following examples is likely to be caused by asomatic mutation?A. A purple flower has a small patch of white tissue.B. One child, in a family of seven, is an albino.C. One apple tree, in a very large orchard, produces its apples 2weeks earlier than any of the other trees.D. A 60-year-old smoker develops lung cancer.
- Give two DIFFERENT examples of how the following can occur:a. A point mutation in an exon that is silent.b. A point mutation in an exon that is NOT silent.c. A point mutation in an intron that is NOT silent.d. A point mutation in a promoter that is NOT silent.Which of the following is true of reverse transcriptase?a. It is required for the movement of DNA transposons.b. It catalyzes the synthesis of DNA from RNA.c. It is required for the transposition of retrotransposons.d. b and c are correct.What are point mutations? Of the different mutations, which is the most deleterious? Justify your answer with suitable genetic disease.