1. Making Babies Lab Create a journal entry with the above title

2. Warm up Punnett squares show probability of offspring outcomes. Capital letters represent dominant traits while lower case letters represent recessive traits. In bats, the gene for long wing length exhibits complete dominance over short wing length. Complete the punnett square and give the genotype and phenotype for each parent as well as the possible offspring outcomes Make another punnett square that shows probabilities of crossing your genotype for PTC tasting with an indivdual who is heterozygous for tasting PTC. If you are a taster, then assume that you are heterozygous (Tt) if you are a non-taster, then you are homozygous recessive.

3. Identify trait types Traits that exhibit complete dominance have the same phenotype for the homozygous dominant genotype and the herozygous genotype Traits that exhibit incomplete dominance have different phenotypes for each genotype, because the heterozygous genotype shows phenotypically as blending of the two traits. Determine whether each trait on the trait chart shows incomplete or complete dominance. Write incomplete or complete under the the name of each trait (do not write next to where it says me or partner). Incomplete dominance Complete dominance

4. 2. Identify your genotype For incomplete dominant traits, determining your genotype is easy, your phenotype shows your genotype do these first. Write your genotype next to “me” on your trait chart For complete dominant traits, if you have the recessive phenotype, then you know your genotype - complete these on your chart For complete dominant traits that you exhibit the dominant phenotype for, you do not know whether you are homozygous dominant or heterozygous. To make the lab more interesting, give yourself the heterozygous genotype for these traits.

5. Partner UP! Write your name on a piece of paper and put it in the correct container up front. Mrs. F will draw partners. Some people will have to have more than one partner. You are expected to BE POLITE and show integrity and leadership in this activity. Rude or inappropriate comments are absolutely NOT tolerated and students who do not behave in a mature manner will be given an alternative assignment. Remember, your partner in this activity has no bearing on who you actually will marry Copy your partner’s genotypes into your data table.

6. Determine your baby’s traits Use a coin flip app to determine which of your two alleles (letters) that you will contribute to your offspring. Here is one : http://justflipacoin.com/http://justflipacoin.com/ Circle the allele that you contribute, and circle the allele that your partner contributes. Then circle the correct genotype and phenotype for your baby in the data table. Continue this process until you have determined all of the traits for your baby. If you have two partners, you will have to flip two different times. Each time you reproduce it is a 50/50 chance of which allele you will pass on to your offspring

7. Absent: Partner Genes- use these genotypes for your partner if you were absent. Shape of face- Rr Cleft in chin- Cc Hair- HH Widow’s Peak- Ww Spacing of eyes- ee Shape of eyes- Aa Position of eyes- Ss Size of eyes- LL Length of eyelashes- LL Shape of eyebrows- Bb Position of eyebrows- Cc Size of nose Ll Shape of lips- Tt Size of ears-Ll Size of mouth LL Freckles- ff Dimples- Dd

8. Draw your baby Hair color, eye color and skin color are all traits that are more complicated than pure complete/incomplete dominance. Typically they end up as a blending of the two parents, although there are exceptions. Flip for the sex of your baby. Boys should do this. Girls sex chromosomes are XX, boys are XY, so what the male contributes determines the sex of the child. Draw your baby with the traits determined by your chart and determine with your partner the color of eyes, skin, and hair. Name your baby- girls get final say because they sign the birth certificates ;)

9. Technology baby- extra credit Take a picture of yourself and another picture of your partner with your tablet. The picture should be a close-up picture of your face. http://makemebabies.com/#page/1 Go to the above website and have the website generate a picture of a baby for you. Save the image and compare it to the baby from your lab.

10. Acquired traits: Your baby as an adult after life choices Create two different sets of environmental/ choice scenarios and draw your child at the age of 20 based on these life choices. Consider ways that one can alter their appearance (body piercing, hair color, tanning, tattoos) or injuries that can alter appearance. Consider life choices such as nutrition, sleep, education, hobbies, athletic training etc that can have an effect on a person’s appearance. Create a drawing and a summary of each option for your child.

11. Post Questions 1. What is the difference between a dominant and recessive trait? 2. Where do humans get their genetic information? 3. Create a punnett square that shows the probabilities of you and your partner for one of the traits that exhibits complete dominance. 4.Explain the difference between incomplete and complete dominance. 5. Consider the following phenotypes and genotypes of Cystic Fibrosis: – Individuals with the disorder (cc) – Individuals that do not have the disorder (CC); (Cc) Is Cystic Fibrosis dominant or recessive? 6. How can two healthy individuals have a child with Cystic Fibrosis? 7. What is the difference between inherited and acquired traits? 8. Which type of trait, inherited or acquired, is linked to your DNA? 9. Give some examples of inherited traits 10. Give some examples of acquired traits 11. Why did people with two partners have to flip the coin for each partner instead of just flipping once?