Science/Strand III/Content Standard 3/High School/Benchmark 1
Benchmark Question: How are characteristics of living
things passed on from generation to generation?
Focus Question: How can a trait be traced from
generation to generation?
Each pair of students will
create a pedigree chart based on a given characteristic (attached and free
ear lobes, sickle cell anemia, tongue rolling, etc)*. Students should
identify dominant and recessive gene combinations (e.g., aa, Aa, AA, A?
[can’t be determined]) for individuals on the chart.
Extension: Predict the possible gene
combinations and physical traits for a cross with one of your offspring and
a recessive individual.
* Teachers should be aware that this
only works for single allele traits (not hair color, eye color, etc.).