Week of: February 13-17, 2012 Lesson date(s): February 14 & 15, 2012 TEKS: Ch

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1 Student Teacher: Angela Lux Campus: Akins High School Week of: February 13-17, 2012 Lesson date(s): February 14 & 15, 2012 TEKS: Ch (F) predict possible outcomes of various genetic combinations such as monohybrid crosses, dihybrid crosses and non-mendelian inheritance Objective(s): The students will be able to predict the traits of an organism by using mono- and di-hybrid Student Materials: pen/pencil composition book copy of warm-up copy of exit quiz copy of Oompah Loompah worksheet Teacher Materials: copies of warm-up copies of Exit Quiz copies of Ooomah Loompah worksheet projector elmo 5 different color pens (for drawing arrows on #15 of worksheet; to show different gametes) Launch for the lesson: The teacher will welcome students as they enter the room, and direct them to gather their warm-up sheets to begin class. The students will collect their warm-up sheet and begin Set class timer for 7 minutes When time is up have class discussion about the warm up (5 minutes) Warm-up sheet will be a review of TEKS Chapter (11A) -The student knows that biological systems work to achieve and maintain balance. The student is expected to: (A) describe the role of internal feedback mechanisms in the maintenance of homeostasis(this is in accordance with the campus plan for student readiness for the STAAR exam) Objective: The student will be able to analyze a physiological situation and determine if homeostasis is occurring. Activity 1: instruct students to get out their composition books review key vocabulary terms regarding genetics using the Socratic method instruct students to copy down key terms in notebook

2 answer questions about genetics copy down key terms in composition book Activity 2: show animation of monohybrid cross pause animation when key terms are discussed (phenotype, genotype, dominant, recessive, homozygous, heterozygous) and quiz class on their definitions circulate classroom be engaged in the animation answer questions about key terms when called upon Activity 3: show animation of dihybrid cross pause animation when key terms are discussed (phenotype, genotype, dominant, recessive, homozygous, heterozygous) and quiz class on their definitions compare and contrast monohybrid crosses and dihybrid crosses circulate classroom be engaged in the animation answer questions about key terms when called upon Activity 4: ask for volunteer to pass out Oompah Loompah genetics worksheet instruct students to work on first 2 pages with their pod (group of 3 or 4) or independently circulate room answering relevant questions about monohybrid crosses work diligently on the first 2 pages either independently or with their pod ask questions pertaining to the lesson Activity 5: regain students attention by flickering the lights instruct students to find #15 (dihybrid cross question) on their worksheets work through problem under the elmo as a class use Socratic method throughout this activity use students knowledge to answer the question rather than your own be attentive

3 be engaged in the lesson copy down steps required to solve #15 answer questions when called upon ask relevant questions regarding genetics and dihybrid crosses Activity 6: instruct students to work through #16 independently or in their pod instruct students to raise their hand once they have completed the problem circulate room answering relevant questions check students work as they complete complete #16 either independently or with their pod ask relevant questions work diligently raise hand when finished Exit Slip: distribute exit quiz covering designated TEKS (school plan to raise test scores) take quiz Essential questions: How can we apply dihybrid crosses to real-world scenarios? Give me an example of when dihybrid crosses could be useful? Compare and contrast monohybrid and dihybrid crosses. Strategies to check for understanding: Informal assessment during class discussion/defining of the vocab/hybrid comparisons Correct completion of the genetics worksheet

Name Date Period Oompah Loompah Genetics (Monohybrid Crosses, Codominance, and Dihybrid crosses) Read and answer each question in the space provided. Use a Punnet square to solve problems. 1.

4 Name Date Period Oompah Loompah Genetics (Monohybrid Crosses, Codominance, and Dihybrid crosses) Read and answer each question in the space provided. Use a Punnet square to solve problems. 1. Oompahs generally have orange faces which are caused by a dominant gene. The recessive condition results in a blue face. Develop a key to show all the possible genotypes and phenotypes for the Oompah s face colors. Genotype Phenotype 2. Two heterozygous Oompahs are crossed. What is the probability that the offspring will have orange faces? Probability of Orange face 3. An orange-faced Oompah (homozygous) is married to a blue-faced Oompah. They have 8 Oompah children. How many of these children will have blue faces? How many will have orange faces?

5 Probability of blue faces Probability of orange faces 4. Otis Oompah has a blue face and is married to Ona Oompah who has an orange face. They have 60 Oompah children, 30 of those children have blue faces. What are Ona and Otis Oompah s genotypes? Otis Oompah s genotype Ona Oompah s genotype 5. Odie Oompah has an orange face; in fact everyone in Odie s family likes to brag that they are a pure line. Much to his family s horror, he married Ondi Oompah who (gasp!) has a blue face. List the phenotypes and genotypes of Ondi and Odie s children? Is Odie s line still pure? Genotypes of children Genotypic Ratio Is Odie's line still pure? YES NO 6. Ona Oompah (from #4) divorces Otis and marries Otto. Otto has a blue face. What is the probability that Ona and Otto s children will have blue faces? Ona Oompah s genotype Otto Oompah s genotype Probability of having children with blue faces

6 7. Orville Oompah is heterozygous for orange face and his wife Olga Oompah is heterozygous for orange face. They have 200 little Oompahs. Show the genotypes, genotypic ratios, phenotypes, and phenotypic ratios for this cross. Homozygous Blue face Heterozygous Blue face Homozygous Orange face Heterozygous Orange face Genotypes genotypic ratio Phenotypes phenotypic ratio What is the probability of having orange-faced Oompahs? What is the probability of having blue-faced Oompahs? 8. Oompahs can have red, blue, or purple hair. Red is the dominant hair color, while blue is recessive for hair color. The heterozygous condition shows the third phenotype --- purple hair. The allele that controls this trait is incompletely dominant, and purple hair is caused by the heterozygous condition. Show a key for all the genotypes and phenotypes for hair color in Oompahs. Remember that there is only one trait (2 alleles) involved here that means that you get to use one alphabet letter (upper and lower case) only. Genotype Phenotype 9. Orville Oompah has purple hair and is married to Opal Oompah who brags that she has the bluest blue hair in the valley. What percentage of Opal s children will be able to brag about their blue hair also?

7 Percentage of little Oompahs with blue hair? 10. One of Opal s children is born with shocking red hair. Orville insists that he is the father of her child. But wait, Opal swears that she has been faithful. She claims the hospital goofed and got her baby mixed with someone else s. Based on the genetics, is this a likely story? Why or why not? 11. Olga Oompah has red hair and marries Oliver Oompah who has blue hair. They have 32 children. Show the genotypic ratio and phenotypic ratio for the hair color of the children. Genotypes genotypic ratio Phenotypes phenotypic ratio 12. Olivia Oompah is married to Oscar Oompah. Both of them have purple hair. They have 100 children. Show the genotypic ratio and phenotypic ratio for the hair color of the children. Genotypes genotypic ratio Phenotypes phenotypic ratio

8 13. In the land of Oompah, blue hair is highly valued. Blue haired Oompahs get special benefits. Opine Oompah has purple hair, but he wants a wife that will give him children with blue hair. What color hair should he look for in a wife? If he can t find this type of Oompah, what should his second choice be? 14. Ozzie Oompah has 7 sisters and brothers. Ozzie has purple hair and an orange face. In fact, all of his siblings have orange faces, but their hair color ranges from blue to purple to red. Given this information, determine the genotypes and phenotypes of Ozzie s parents. 15. A male and female Oompah are both heterozygous for the traits: blue face (Bb) and big feet (Ff). Create a dihybrid Punnett square (16 boxes) to determine the phenotypic ratio and the genotypic ratio for all children. List these under your square.

9 genotypes: genotypic ratios: phenotypes: phenotypic ratio: 16. Olive Oompah has an orange face and small feet. She marries Owen Oompah who is heterozygous for both traits (blue face and big feet). Create a dihybrid Punnett square (16 boxes) to determine the phenotypic ratio and the genotypic ratio for all children. List these next to your square. genotypes: genotypic ratios: phenotypes: phenotypic ratio:

10 Adapted from:

Lecture 3 Monohybrid and Dihybrid Crosses

THE MONOHYBRID CROSS Lecture 3 Monohybrid and Dihybrid Crosses FOLLOWING THE INHERITANCE OF ONE TRAIT Monohybrid cross Parents differ by a single trait. Crossing two pea plants that differ in stem size,