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QR Challenge: Human Chromosomes

Created using the ClassTools QR Treasure Hunt Generator

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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

3. Print out the QR codes.

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

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!

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.

Questions / Answers (teacher reference)

Question

Answer

1. How many chromosomes do humans have?46
2. What is the Human Genome Project?the full set of genetic information that an organism carries in its DNA.
3. True/False: In sex chromosomes, males have two copies of the X chromosome and females have one X chromosome and one Y chromosomeFALSE
4. What are chromosomes?the bundles of DNA and protein found in the nuclei of eukaryotic cells.
5. How many genes are found on the Y chromosome?about 140
6. What is the most common form of trisomy?Down Syndrome; involving three copies of chromosome 21.
7. What is Down Syndrome characterized by?mild to severe mental retardation and a high frequency of certain birth defects.
8. True/False: half of all sperm cells carry an X chromosome and half carry a Y chromosomeTRUE
9. How many genes are found on the X chromosome?more than 1200
10. What is an example of a human trait that follows a pattern of simple dominance?Rh factor (Rh+/Rh-) in blood or MC1R gene for skin/hair color.
11. What is a karyotype and what does it show?shows the complete diploid set of chromosomes grouped together in pairs, arranged in order of decreasing size.
12. A typical karyotype of a human cell contains how many pairs of chromosomes?23
13. What does a pedigree show?the presence or absence of a trait according to the relationships between parents, siblings, and offspring.
14. What can a pedigree often determine?if an allele for a trait is dominant or recessive, autosomal or sex-linked.
15. What causes Sickle Cell Disease?a defective allele for one of the two polypeptides in hemoglobin, the oxygen-carrying protein in red blood cells; defective polypeptide causes hemoglobin molecules to stick together when the blood’s oxygen level decreases; molecules clump into long fibers, forcing cells into a distinctive sickle shape, which gives the disorder its name.
16. What is a sex-linked gene?a gene located on a sex chromosome
17. What is an example of a human trait that follows a pattern of codominance and multiple alleles?blood types
18. What chart do geneticists use to analyze the pattern of inheritance by a particular trait?pedigree
19. True/False: In a pedigree, a Circle = male and a Square = female.FALSE
20. The remaining 44 human chromosomes are known as:autosomal chromosomes or autosomes
21. What is a genetic advantage to the cystic fibrosis allele?Individuals heterozygous for CF would have had an advantage when living in cities with poor sanitation and polluted water, and—because they also carried a normal allele—these individuals would not have suffered from cystic fibrosis.
22. True/False: Children with CF have serious digestive problems and produce thick, heavy mucus that clogs their lungs and breathing passageways.TRUE
23. What is an example of a human trait that is sex-linked?colorblindness
24. What is a genetic advantage to the sickle cell allele?Individuals with just one copy of the sickle cell allele are generally healthy, and are also highly resistant to the parasite, giving them a great advantage against malaria.

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=How_many_chromosomes_do_humans_have?

Question 1 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_the_Human_Genome_Project?

Question 2 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=True/False:_In_sex_chromosomes,_males_have_two_copies_of_the_X_chromosome_and_females_have_one_X_chromosome_and_one_Y_chromosome

Question 3 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_are_chromosomes?

Question 4 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=How_many_genes_are_found_on_the_Y_chromosome?

Question 5 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_the_most_common_form_of_trisomy?

Question 6 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_Down_Syndrome_characterized_by?

Question 7 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=True/False:_half_of_all_sperm_cells_carry_an_X_chromosome_and_half_carry_a_Y_chromosome

Question 8 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=How_many_genes_are_found_on_the_X_chromosome?

Question 9 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_an_example_of_a_human_trait_that_follows_a_pattern_of_simple_dominance?

Question 10 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_a_karyotype_and_what_does_it_show?

Question 11 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=A_typical_karyotype_of_a_human_cell_contains_how_many_pairs_of_chromosomes?

Question 12 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_does_a_pedigree_show?

Question 13 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_can_a_pedigree_often_determine?

Question 14 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_causes_Sickle_Cell_Disease?

Question 15 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_a_sex-linked_gene?

Question 16 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_an_example_of_a_human_trait_that_follows_a_pattern_of_codominance_and_multiple_alleles?

Question 17 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_chart_do_geneticists_use_to_analyze_the_pattern_of_inheritance_by_a_particular_trait?

Question 18 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=True/False:_In_a_pedigree,_a_Circle_=_male_and_a_Square_=_female.

Question 19 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=The_remaining_44_human_chromosomes_are_known_as:

Question 20 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_a_genetic_advantage_to_the_cystic_fibrosis_allele?

Question 21 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=True/False:_Children_with_CF_have_serious_digestive_problems_and_produce_thick,_heavy_mucus_that_clogs_their_lungs_and_breathing_passageways.

Question 22 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_an_example_of_a_human_trait_that_is_sex-linked?

Question 23 (of 24)

 


Human Chromosomes: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_a_genetic_advantage_to_the_sickle_cell_allele?

Question 24 (of 24)