|
|
|
Human
Genetic Variation Activity
- Set up several stations
for students to measure their heights (cm.).
- Using the Class Height
Graph overhead instruct students to record their heights.
- Have
students record their sex chromosomes (XX or XY), number of noses,
and hair color.
- Compare the graphs.
Students will see two distinct bars for determination of sex and
they should obtain a bell curve for height and hair color.
- Discuss other traits
that will show a graph similar to sex determination (cystic fibrosis,
sickle cell, Huntington's). These traits are determined by two
alleles.
- Explain that traits
such as height, weight, and skin color show similar graphs. These
traits show a variation of traits and are determined by many genes.
- Additional
background information on Understanding
Human Genetic Variation.
|
|
|
|
