QR Challenge: The Punnett Square

Created using the ClassTools QR Treasure Hunt Generator

Teacher Notes

A. Prior to the lesson:

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

• Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
• Bring these devices into the lesson.

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

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B. The lesson:

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!

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C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

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Questions / Answers (teacher reference)

Question	Answer
1. Use the Punnett square to make a cross between a heterozygous grey rat (Gg) and a homozygous grey rat (GG).	GG, GG, Gg, Gg
2.
3. Make a cross between a heterozygous gray rat (Gg) and a homozygous black rat (gg).	Gg, Gg, gg, gg
4.
5. Brown eyes are dominant over blue eyes. Make a cross between a dad with brown eyes (Bb) and a mom with blue eyes (bb). What are the possible genotypes of the offspring?	Bb, Bb, bb, bb
6.
7. Black hair is dominant and blond hair is recessive. make a cross between two parents if the dad has black hair (HH) and the mom has blond hair (hh). what are the possible genotypes and phenotypes of the offspring?	All Hh, black hair
8.
9. Freckles are recessive and no freckles are dominant. Mom is heterozygous dominant (Ff) and dad is homozygous recessive (ff). What are the possible outcomes (in %) of the offspring?	Ff, Ff, ff, ff, 50% freckles, 50% no freckles
10.
11. Dimples are dominant to no dimples. Determine the genotype possibilities for a mother who has dimples (Dd) and a father with no dimples.	Dd, Dd, dd, dd

 

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