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6th Grade Science / Lesson 6 - Predicting Inherited Traits

Predict Inherited Traits
What will we be learning today?


  • In this lesson, we are going to learn all about how we predict inherited traits.


How Do We Predict Inherited Traits?


  • Have you ever used a multiplication table? How did it work.

  • In genetics you can use a kind of table to help predict inherited traits. The table is a Punnett square. A Punnett square is a table used to predict the outcome of crossing different forms of a trait, such as in Mendel's experiments.


How Do We Predict Inherited Traits?


  • In a Punnett square, letters are used to represent Mendel's factors for each trait.

  • A capital letter stands for the dominant factor, and a lowercase letter stands for the recessive factor.

  • To make a Punnett square, draw a large square and divide it into four smaller squares. Write the parent's factor for the trait outside the square.

  • Fill in each square with the letter above it and the letter to the left of it. The squares show all the possible combinations of traits in the offspring.








Let's Review What We Learned Today!


  • Now complete your worksheet!