Continuous and Discontinuous Variation Identify three examples of

Continuous and Discontinuous Variation Identify three examples of inherited characteristics, and three environmental characteristics LAST LESSON Describe the four functions of the human skeleton LAST YEAR December 2021 Explain why sound cannot be heard in space LAST WEEK Suggest some advantages and disadvantages of recycling LAST TOPIC Challenge: Suggest how variation can help a species to survive

Continuous and Discontinuous Variation Species December 2021

Explain the difference between continuous and discontinuous variation, and plot graphs to show both Variation, Continuous, Discontinuous, Genetic, Inherited, Environmental Define and distinguish between continuous and discontinuous data Describe examples of continuous and discontinuous variation Plot bar charts or line graphs to show continuous or discontinuous variation data

Continuous and Discontinuous Variation December 2021 Suggest some examples of continuous and discontinuous variation. Justify your answer. An example of continuous variation would be… this is because… An example of discontinuous variation would be… this is because…

Continuous and Discontinuous Variation December 2021 Continuous variation: Human height is an example of continuous variation. It ranges from that of the shortest person in the world to that of the tallest person. Any height is possible between these values. So it is continuous variation. For any species a characteristic that changes gradually over a range of values shows continuous variation. Examples of such characteristics are: • height • weight How many more can you think of?

Continuous and Discontinuous Variation December 2021 Continuous variation: If you record the heights of a group of people and draw a graph of your results, it usually looks something like this. This is called normal distribution.

Continuous and Discontinuous Variation December 2021 Discontinuous variation: A characteristic of any species with only a limited number of possible values shows discontinuous variation. Human blood group is an example of discontinuous variation. In the ABO blood group system, only four blood groups are possible (A, B, AB or O). There are no values in between, so this is discontinuous variation. Here are some examples: • blood group • gender (male or female) • eye colour How many more can you think of?

Continuous and Discontinuous Variation Discontinuous variation: December 2021

Continuous and Discontinuous Variation December 2021 Categorise the following statements into continuous and discontinuous. 1) Variations are predictable. 6) Appear occasionally. 2) Already present in the population. 7) Also called fluctuations. 3) variations is unpredictable. 8) They are very common. 4) They are very common 9) Variations are new variations though similar variations might have occurred previously. 5) Also known as mutations or sports. 10) They disturb the genetic system of the organism.

Continuous and Discontinuous Variation December 2021 Categorise the following statements into continuous and discontinuous. Continuous Categorical 1) Variations are predictable. 3) Variations is unpredictable. 2) Already present in the population. 5) Also known as mutations or sports. 4) They are very common 7) Also called fluctuations. 8) They are very common. 6) Appear occasionally. 9) Variations are new variations though similar variations might have occurred previously. 10) They disturb the genetic system of the organism. Write all the statements down in your book that you got incorrect.

Continuous and Discontinuous Variation Define continuous and discontinuous variation. December 2021 State which type of graph would be drawn for each type of variation Draw a graph of the following data: Eye colour Number of people Describe at least three examples of each type of variation in humans Blue 7 Green 5 Brown 15 Hazel 3 Challenge: Apply knowledge of variation to correlation shown in graphs

Continuous and Discontinuous Variation December 2021 Todays Lesson Describe the difference between continuous and discontinuous variation Last Lesson Explain how some characteristics can be both inherited and environmental. Give an example Last Lesson Suggest how humans are contributing to global warming