Presentation on theme: "Standard Grade Biology"— Presentation transcript:
1 Standard Grade Biology Inheritance TopicWhat is Variation?
2 Inheritance By the end of this lesson you should be able to: Describe what variation is.Give examples of 2 types of variationin your classKnow how to present data to showthe 2 types of variation
3 What is variation?There are many differences between the pupils in your class.List the ones that you can SEE.
4 What is variation?Collect a “Variation Data for our class” sheet to record your data.Working in pairs record the following information for each of you:Middle finger length in cmTongue rollerEar lobesHand claspHeight in cmEye colour
5 Discontinuous variation Some of your data falls into one or more clear cut groups.Which ones?This variation is called DISCONTINUOUS variation.Write 3 examples into your jotter.
6 Discontinuous variation We use a bar chart to show discontinuous variation.Draw a bar chartto show eithertongue rollers oreye colour.
7 Continuous variation? Some of your data had to be measured. Which ones?This variation is called CONTINUOUS variation.Write 3 examples into your jotter.
8 Continuous variation We use a histogram to show continuous variation. Draw a histogramto show eitherheight orfinger length.
9 What is Variation? of the same show many These differences are called individualsof the sameshow many These differences are calledspeciesdifferencesvariationsspeciesdifferencesindividualsvariations
10 Types of variation?Draw a table dividing the following list into continuous and discontinuous variations:Blood groups ear lobesHeight body massPulse rate eye colourGender shoe sizeTongue rolling hand span
11 Types of variation? Complete the “Variation Flow Chart” Use the following wordbank.MeasuredWide rangeDiscontinuousObservedClear cutContinuous
12 Inheritance By the end of this lesson you should be able to: Describe what variation is.Give examples of 2 types of variationin your classKnow how to present data to showthe 2 types of variation