Mastering the Art of Building Punnet Squares

Mastering the Art of Building Punnet Squares
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Slide 1: Slide
ScienceSecondary Education

This lesson contains 13 slides, with interactive quizzes and text slides.

time-iconLesson duration is: 30 min

Items in this lesson

Mastering the Art of Building Punnet Squares

Slide 1 - Slide

This item has no instructions

Learning Objective
At the end of the lesson, you will be able to build Punnet Squares and predict the probability of traits in offspring.

Slide 2 - Slide

Introduce the objective of the lesson to students.
What do you already know about Punnet Squares?

Slide 3 - Mind map

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What is a Punnet Square?
A Punnet Square is a grid that helps to predict the probability of alleles in offspring.

Slide 4 - Slide

Explain the concept of Punnet Squares to students.
Parental Genotypes
The top row and left column of a Punnet Square represent the genotypes of the parents.

Slide 5 - Slide

Provide examples of parental genotypes.
Possible Offspring Genotypes
The boxes within the Punnet Square represent the possible genotype combinations of the offspring.

Slide 6 - Slide

Show students how to fill in the Punnet Square using the genotypes of the parents.
Dominant and Recessive Alleles
Dominant alleles are represented by uppercase letters and always show up in the offspring's phenotype. Recessive alleles are represented by lowercase letters and only show up in the offspring's phenotype if both alleles are recessive.

Slide 7 - Slide

Explain the difference between dominant and recessive alleles to students.
Probability of Offspring Traits
The Punnet Square can be used to predict the probability of certain traits appearing in offspring.

Slide 8 - Slide

Provide examples and calculations of probability of offspring traits.
Practice Makes Perfect
Use the Punnet Square to predict the probability of offspring traits given certain parental genotypes.

Slide 9 - Slide

Give students a Punnet Square worksheet to practice building and calculating probability.
Real-World Applications
Punnet Squares are used in genetics research to predict the probability of genetic disorders or traits in offspring.

Slide 10 - Slide

Discuss real-world applications of Punnet Squares with students.
Write down 3 things you learned in this lesson.

Slide 11 - Open question

Have students enter three things they learned in this lesson. With this they can indicate their own learning efficiency of this lesson.
Write down 2 things you want to know more about.

Slide 12 - Open question

Here, students enter two things they would like to know more about. This not only increases involvement, but also gives them more ownership.
Ask 1 question about something you haven't quite understood yet.

Slide 13 - Open question

The students indicate here (in question form) with which part of the material they still have difficulty. For the teacher, this not only provides insight into the extent to which the students understand/master the material, but also a good starting point for the next lesson.