Punnett Squares

Punnett squares predict the genetic variation of offspring.

Part 1: Mendel and Punnett Squares

Read the Genetics Book (pp. D-34 to D-38).

In your journal or aloud in class (as directed), answer questions 1-5 on p. D-38.

If you have already done Gene Combo (Introduction to Genes Part 4-5), read the Genetics Book (pp. D-39 to D-43).

In your journal, fill in the table and the Punnett squares as shown on the last page here.

Part 2: Punnett Square Practice

With your table group, use a whiteboard to answer the questions in the Punnett Square Practice PowerPoint.

Part 3: More Punnett Square Practice

Complete the Punnett Square Practice assignment sheet (use a dry erase marker on a sheet-protected page). 

Then, check your work with the answer key.

Punnett Squares Extension: Punnett Square for Your Family

Research a simple dominant human trait (such as attached ear lobes or tongue rolling), interview family members, and create at least four Punnett squares showing how those traits have traveled in your family.