Lesson summary for:
Exploring Variation and Heritability
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Students explore the natural variations present in a variety of organisms by examining sunflower seeds and Wisconsin Fast Plants™ to consider the role of heredity in natural selection.
Two to three class periods.
Ten days prior to the activity you will need to plant several pots of Wisconsin Fast Plants ™ so that they have true leaves by the time of the activity.
Students use graphs and statistical tools.
- Evolution results from selection acting upon genetic variation within a population.
- Traits that confer an advantage may persist in the population and are called adaptations.
- Inherited characteristics affect the likelihood of an organism's survival and reproduction.
- Over time, the proportion of individuals with advantageous characteristics may increase (and the proportion with disadvantageous characteristics may decrease) due to their likelihood of surviving and reproducing.
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