Use Foil Stars to Show What Genes Do!

 Your Task: Predict what the offspring will be like in a cross of two organisms. 
Just for fun, let's use the stars to represent genes.


Choose the symbols to represent the genes. Fill in the stars at the top marked Dominant and Recessive. They should be different colors.

Now pick a characteristic such as   Tall / not tall     or  Yellow / not yellow

Fill in the appearance of the parent row.   Fill in the genes that they could carry.

Now figure out what the children will be like.   Have fun!

chromosome Exercise

Return to Lesson 4

1999, 2003.  Elizabeth Anne Viau. This material may be used freely for instructional purposes but not sold for a price beyond the cost of reproduction. Please inform the author if you use it at