Study Guidelines: Scientific Method
Study Guidelines: Change by Natural Selection
Living organisms are not permanent and change over time. Natural selection is the mechanism by which nature changes and “favors” individuals with the right traits to survive and reproduce in the new environment. This leads to change.
1. Based on the science you have learned in this class since the beginning of the year, explain why Lamark’s Theory of Aquired Characteristics, in which organisms choose to change, is incorrect and why the Theory of Natural Selection makes more sense.
2. a. Name the five things that cause change. b. Practice your 5 fingers of change.
3. Create sentences using your vocabulary words. Practice your words on Quizlet (see class website).
4. a. Explain what survival of the fittest means (In your own words). b. Explain what it means to have high fitness. c. Explain what it meant to have low fitness.
5. Define variations. Why are they important for change to occur?
6. a. Choose any species of animal and identify at least 5 variations among the individuals of the species. Ex. Tigers
b. Choose a species of plant and identify at least 5 variations amount the individuals Ex. Pine tree
7. a. List the four main components that make change by natural selection possible (complete YouTube Lesson) b. Identify and describe the 5 main causes of change (5 fingers of evolution).
8. a. Name some environmental changes that can impact a species. b. Describe the possible out comes for a population (group of the same species living in the same area) if their environment changes (Hint: think of our flow chart)
9. Polar bears live in a very cold environment. Bears who have thicker fur coats are more like to survive in this environment but naturally some have thinner coats than others. Their cold environment is becoming increasingly warmer. a. What variation is important in this species case? b. What change do you expect to see among polar bears? c. Draw a picture of the change happening over time. d. Use your change by natural selection sentence frame (see notes) to explain how change will occur in this scenario.
10. a. Watch the YouTube Lesson (see class website or Google classroom). Describe the 3 types of natural selection and draw the graph for each. b. Compare and contrast genetic drift to natural selection.
11. a. Explain why mutations are an important cause of change. b. How often do mutations occur? c. How do mutations provide evidence/support for the Theory of Natural Selection? (5 sentences minimum, If it is not this long you will not get homework credit)
12. Describe how sexual selection can lead to change in a species.
13. a. Define speciation b. List the types of isolation that can lead to a new species. c. Explain how each could lead to a new species
14. a. Explain what stratigraphy is and how it helps us identify age. b. Explain how fossils provide evidence to support the Theory of Natural Selection (5 sentences minimum, If it is not this long you will not get homework credit)
15. Explain how DNA sequences provide evidence for the idea of common ancestry/speciation.
16. Explain how anatomical structures and embryological development provide evidence for the idea of common ancestry.
Study Guidelines: Change by Natural Selection
Living organisms are not permanent and change over time. Natural selection is the mechanism by which nature changes and “favors” individuals with the right traits to survive and reproduce in the new environment. This leads to change.
1. Based on the science you have learned in this class since the beginning of the year, explain why Lamark’s Theory of Aquired Characteristics, in which organisms choose to change, is incorrect and why the Theory of Natural Selection makes more sense.
2. a. Name the five things that cause change. b. Practice your 5 fingers of change.
3. Create sentences using your vocabulary words. Practice your words on Quizlet (see class website).
4. a. Explain what survival of the fittest means (In your own words). b. Explain what it means to have high fitness. c. Explain what it meant to have low fitness.
5. Define variations. Why are they important for change to occur?
6. a. Choose any species of animal and identify at least 5 variations among the individuals of the species. Ex. Tigers
b. Choose a species of plant and identify at least 5 variations amount the individuals Ex. Pine tree
7. a. List the four main components that make change by natural selection possible (complete YouTube Lesson) b. Identify and describe the 5 main causes of change (5 fingers of evolution).
8. a. Name some environmental changes that can impact a species. b. Describe the possible out comes for a population (group of the same species living in the same area) if their environment changes (Hint: think of our flow chart)
9. Polar bears live in a very cold environment. Bears who have thicker fur coats are more like to survive in this environment but naturally some have thinner coats than others. Their cold environment is becoming increasingly warmer. a. What variation is important in this species case? b. What change do you expect to see among polar bears? c. Draw a picture of the change happening over time. d. Use your change by natural selection sentence frame (see notes) to explain how change will occur in this scenario.
10. a. Watch the YouTube Lesson (see class website or Google classroom). Describe the 3 types of natural selection and draw the graph for each. b. Compare and contrast genetic drift to natural selection.
11. a. Explain why mutations are an important cause of change. b. How often do mutations occur? c. How do mutations provide evidence/support for the Theory of Natural Selection? (5 sentences minimum, If it is not this long you will not get homework credit)
12. Describe how sexual selection can lead to change in a species.
13. a. Define speciation b. List the types of isolation that can lead to a new species. c. Explain how each could lead to a new species
14. a. Explain what stratigraphy is and how it helps us identify age. b. Explain how fossils provide evidence to support the Theory of Natural Selection (5 sentences minimum, If it is not this long you will not get homework credit)
15. Explain how DNA sequences provide evidence for the idea of common ancestry/speciation.
16. Explain how anatomical structures and embryological development provide evidence for the idea of common ancestry.
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