68 8 Unit 8 Lesson 1 They do not happen They do not Incorrect 15 very often and usually happen very often statement they have a negative and usually they or neutral (no) effect have no effect on on the organism. the organism (are Mutations can neutral). sometimes change Sometimes, the protein (the mutations are structure of the beneficial or protein directly affects harmful. Mutations how it functions), and can sometimes thus can cause a new change the protein trait in organisms. (the structure of the protein directly affects how it functions), and thus can cause a new trait in organisms. 69 8 Unit 8 Lesson 2 Which will evolve Which will evolve Incorrect 15 faster: mice or faster: mice or statement elephants? Mice will elephants? Mice evolve faster because will evolve faster they have shorter because they have lifespans and more faster generation offspring at one time. time and more There is more chance offspring at one for variation. time. Variation accumulates faster. 70 8 Unit 8 Lesson 2 So if there is a Remove sentence Remove 15 mutation, there is a trait that is not present or altered by this mutation. 71 8 Unit 8 Lesson 2 They will guess They will guess Clarification 15 whether these new whether these new traits (caused by the traits (caused by mutations) are the mutations) are beneficial, harmful, or beneficial, harmful, neutral (will have no or neutral (will effect) on either have no effect) on survival or mating or either survival or reproduction. reproductive success.
68 8 Unit 8 Lesson 15 1 They do not happen very often and usually they have a negative or neutral (no) effect on the organism. Mutations can sometimes change the protein (the structure of the protein directly affects how it functions), and thus can cause a new trait in organisms. They do not happen very often and usually they have no effect on the organism (are neutral). Sometimes, mutations are beneficial or harmful. Mutations can sometimes change the protein (the structure of the protein directly affects how it functions), and thus can cause a new trait in organisms. Incorrect statement 69 8 Unit 8 Lesson 15 2 Which will evolve faster: mice or elephants? Mice will evolve faster because they have shorter lifespans and more offspring at one time. There is more chance for variation. Which will evolve faster: mice or elephants? Mice will evolve faster because they have faster generation time and more offspring at one time. Variation accumulates faster. Incorrect statement 70 8 Unit 8 Lesson 15 2 So if there is a mutation, there is a trait that is not present or altered by this mutation. Remove sentence Remove 71 8 Unit 8 Lesson 15 2 They will guess whether these new traits (caused by the mutations) are beneficial, harmful, or neutral (will have no effect) on either survival or mating or reproduction. They will guess whether these new traits (caused by the mutations) are beneficial, harmful, or neutral (will have no effect) on either survival or reproductive success. Clarification
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