Genetics Project. Using the same traits from our Jane and John activity, we will determine how an offspring of yours could look.

Transcription

1 Genetics Project Name 7 th Grade PSI Science Partner s Name Due Date In our Jane and John activity, we looked at the traits of fictional characters. For this final project, we will now talk about YOUR traits! Using the same traits from our Jane and John activity, we will determine how an offspring of yours could look. On top of that, each group s child will unfortunately be diagnosed with a genetic disorder. Your group will create a Power Point about this disease based on the criteria provided. You will be partnered up with someone randomly to complete this project. The steps you need to take to complete this project are as follows: 1) Figure out the genotypes/phenotypes of you and your partner, cross them on the worksheets provided, and list the genotypes/phenotypes of your offspring in the table. 2) Draw a cartoon of your child on standard computer paper. Be sure to include all of the traits that were determined using the Punnett Squares! We will be showing these to the class during your presentation. 3) Research the genetic disorder your child has and create a Power Point that provides the class with information about the disease. We will be presenting these in class.

2 Genetic Disorder you will research: Your Power Point must have each of these pieces of information on a separate slide: - Start off your Power Point with info about your child. Include the name of the child (your choice!) and list the traits that your child has. - What is the name of the disorder your child has and what is the history behind it? Who discovered it and/or who has done research on the disease? - How is the disorder diagnosed? What tests are done? - How does a person receive the disorder? Is it sex-linked (which means it is passed on through the mom s or dad s sex cell)? Is it a mutation? Is it due to heredity? If it is passed on a particular chromosome, which one is it? Is it recessive or dominant? - How many people are diagnosed with this disorder? (For example, you could have a 1 in 3 chance of being affected by it). Is it more common in a certain group of people (ex. ethnic group, people in a certain country, a certain gender, etc)? - What are the signs and symptoms of the given disorder? What happens to the body? What part of the body does it generally affect? - What types of treatments are there for the disorder? Any medications or treatments? What is the life expectancy (how long can a person with the disease expect to live)? - Include any relevant pictures you would like, such as images of people who are affected by the disease or images of the affected chromosomes.

3 Use the table below to figure out what the offspring would look like. Put one of your names where it has the number 1. The other partner will put his/her name where it says 2. On the following pages, cross your genes like we did in the Jane and John activity. Traits 1) 2) Child Dominant Recessive Genotype Phenotype Genotype Phenotype Genotype Phenotype Round head (R) Widow s peak (A) Wide nose (N) Hanging earlobes (H) No freckles (G) Unconnected eyebrows (E) Dark hair (D) Dark eyes (B) Male (XY) Block head (r) Straight hairline (a) Narrow nose (n) Attached earlobes (h) Freckles (g) Connected Eyebrows (e) Light hair (d) Light eyes (b) Female (XX)

4 Important Info for Completing the Table and Punnett Squares: 1) For this activity, it doesn t matter if your group includes 2 boys or 2 girls. All we are looking at are your traits. If your group is made up of 2 boys, then ignore the YY chromosome pair that will appear in one of the boxes in the Punnett Square. 2) Say someone in your group has the dominant trait (a round head for example). This means that their genotype can either be RR or Rr. How will you tell the difference? You can t so follow these steps to determine the genotype of that person. a. In the table, write the capital letter to represent the dominant trait (you must have at least one to have that trait) b. For the other letter, flip the coin. If it lands on heads, then you will have a genotype that consists of 2 capitals letters. (RR in our example) c. If it lands on tails, you have a capital and a lowercase letter (Rr in our example) d. This will work for every dominant trait you have. 3) After you complete the Punnett Square, you must move the genotypes of the offspring back into the table (just like we did with Jane and John). 4) When you have determined each of the traits for your offspring, you are ready to work on your drawing. Include each phenotype in your drawing. So for example, if your Punnett Squares gave you a child with a round head, blue eyes, attached earlobes, etc make sure your drawing has that as well! Use pencil first, then color. Take your time because you are going to show this to the class! (My suggestion: Have the better drawer do this!) 5) Just like I have said before, an introduction to your child will be included in the Power Point! You can even scan in the picture you drew if you want!

5 Fill in the Punnett Squares based on the information from the table on the previous page. 1) Head Shape 2) Hairline

6 3) Nose shape 4) Earlobes

7 5) Freckles 6) Eyebrows

8 7) Hair color 8) Eye color

9 9) Gender