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
4. Cut them out and place them around your class / school.
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!
4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.
Question | Answer |
| 1. In seals, the gene for the length of the whiskers has two alleles. W is for long whiskers, and w is for short whiskers. A homozygous long-whiskered seal was crossed with a heterozygous long-whiskered seal. What is the probability that one of their baby seals has short whiskers? | 0% | 2. List all the genotypes and phenotypes for the four human blood types | A: IAIA or IAio. B: IBIB or IBio. AB: IAIB. O: ioio | 3. Whale’s skeletal legs, human wisdom teeth, and human tailbones are examples of ___________ structures, which are evidence of ____________ evolution. WHY? | vestigial structure, divergent evolution, ancestral function, non-useful structure | 4. Draw a graph. A certain region had no malaria until the year 2010 when malaria-carrying mosquitoes were introduced to the environment. How does the amount of sickle-cell alleles in the population change? (The x axis shows the year. The y-axis shows the amount of sickle-cell alleles in a population). | see drawing | 5. Two people with type O blood have three children. How many of those three children also have type O blood? | all of them have type O blood | 6. In Hawaiian ti plants, some leaves are streaked with a pink color, and some leaves are streaked with a cream color. Pink streaks are dominant to cream streaks. Two heterozygous ti plants are crossed. What is the genotypic ratio? What is the phenotypic ratio? | genotypic=1:2:1 and phenotypic 3:1 | 7. A man who is homozygous for type B blood has a child with a woman who has type O blood. What is the probability their child will have AB blood? What about A blood? B blood? O blood? | AB: 0% A: 0%. B: 100%. O: 0% | 8. Fins and flippers of penguins, dolphins, and sharks are examples of ___________ structures, which are evidence of ____________ evolution. WHY? | analogous structure, convergent evolution, same function different structure | 9. In order, what are going to be the most common genotypes for sickle-cell (aa, Aa, AA) in a place that has had NO malaria for many hundreds of years? | 1. AA 2. Aa 3. aa | 10. In a certain species of seahorse, green skin (G) is dominant to orange skin (g). A male and female seahorse have 1000 babies together. All 1000 of their babies have orange skin. What are the likely genotypes and phenotypes of the parents? | gg orange for both | 11. A woman with type A blood is claiming that a man with type AB blood is the father of her child, who is also type AB. Could this man be the father? Show the punnet square(s) possibilities. | Yes it’s possible | 12. In order, what are going to be the most common genotypes for sickle-cell (aa, Aa, AA) in a place that has had HIGH malaria for many hundreds of years? | 1. Aa 2. AA 3. aa | 13. The forelimbs of vertebrates (for example: human, cat, horse, whale, bat) are examples of ___________ structures, which are evidence of ____________ evolution. WHY? | homologous structure, divergent evolution: same structure different function | 14. Curly hair (H) is dominant to straight hair (h). Leila has curly hair and her brother Lou has straight hair. What are the possible genotypes and phenotypes of their parents? | Hh and hh,or Hh and Hh | 15. A man who has type AB blood has a child with a woman who has type O blood. What is the probability their child will have AB blood? What about A blood? B blood? O blood? | AB: 0%. A: 50%. B: 50%. O: 0%. | 16. In a certain species of wana, spines can be either pale purple (P) or pale pink (p). Purple is the dominant color. A heterozygous purple wana is crossed with a pink wana. What is the probability that the offspring’s spines will be purple? What is the probability that the offspring’s spines will be pink? | purple=50% pink=50% | 17. Draw a graph. A certain region had high malaria until the year 2000 when a vaccine was invented and and insecticide-treated benders were brought in. How does the amount of sickle-cell alleles in the population change? (The x axis shows the year. The y-axis shows the amount of sickle-cell alleles in a population). | see drawing | 18. A man with type AB blood is married to a woman with type O blood. They have two natural children, and one adopted child. The children’s blood types are: A, B, and O. Which child was adopted? | type O is adopted | 19. In a certain fish species (Perissodus microlepis), some individuals have mouths that open to the right and some individuals have mouths that open to the left. The direction of the mouth opening is controlled by a single gene. The allele for right-opening mouth (R) is dominant to the allele for a left-opening mouth (r). If two fish heterozygous for the mouth trait are crossed, what is the expected phenotypic ratio? | 3:1 | 20. A person has type B blood. What are ALL the possible blood types of his parents? Show the crosses to prove your answer. | AB, A, B, O, many |
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