A 7th Grade Heredity Project

February 11, 2015

The Apple Doesn't Fall Far From the Tree

The seventh grade STARS Science students have just completed a unit on Patterns of Heredity. In this unit the students learned that through reproduction, genes are passed from parents to offspring in predictable patterns.

Students learned the difference between inherited and acquired traits. They also were introduced to vocabulary such as gene, allele, phenotype, genotype, recessive and dominant to better understand the heredity process.

After extensive study, the students used a tool called a Punnett square to predict possible outcomes for inheritance of traits. Each student selected a trait to research within his or her own family. After careful study of the trait, they created a Punnett square to display the potential genotypes of offspring. Students were taught two ways to express probability of the genotypes. They were asked to find the ratio and percentage of the possible outcomes.

Seventh grade scientists very quickly learned why parents and offspring are similar. It was exciting for them to investigate several different traits and discover why they are like they are! They will be presenting their heredity projects to their parents during the Student Led Conferences next week.

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