Activity 01
Class Survey: Trait Distribution
Students survey their own observable traits (attached vs. free earlobes, tongue rolling, dominant hand, hair texture, eye color) and pool class data in a shared chart. Groups analyze the distribution of each trait, looking for patterns. A discussion follows about why not everyone shares the same trait even within one family.
Explain how traits are passed from parents to offspring.
Facilitation TipDuring the Class Survey, circulate and gently correct any statements that imply exact duplication between parent and offspring by pointing to data showing variation in the room.
What to look forPresent students with images of different parent animals and their offspring (e.g., cats, dogs, birds). Ask students to circle three inherited traits they observe that are common between parents and offspring, and one trait that is different.