Presentation on theme: "Problem: How can you investigate inheritance patterns in families."— Presentation transcript:
1Problem: How can you investigate inheritance patterns in families. Materials: Paper, Pen/Pencil
2Case Study 1Joshua and Bella have a son named Ian. Ian has been diagnosed with cystic fibrosis.Joshua and Bella are both healthyBella’s parents are both healthyJoshua’s parents are both healthyJoshua’s sister, Sara has cystic fibrosis.
3Create a pedigree that shows all of the family members. Shade in the circles or squares representing individuals who have cystic fibrosis.Determine the genotype of each family member starting with Ian. Write it next to each person.N= dominant normal allelen= recessive allele (cystic fibrosis)
4Case Study 2The father, Li, has a skin condition (purple dots). The mother, Mai, does not.Li and Mai’s first child, a girl named Gemma, has the same skin condition as Li.Mai’s sister, Lu has the same skin condition, but Mai’s parents do not.Li has one brother, Chen whose skin is normal, and one sister, Mulan who has the skin condition.Li’s mother has the skin condition. His father does not.
5Create a pedigree that shows all of the family members. Shade in the circles or squares representing individuals who have the skin condition.Determine the genotype of each family member.H= Healthy skinh=dots
6How does this activity relate to the topics that you and your classmates discussed in chapter 4? Why?
7Daniel has tongilitis, his wife Semone does not. Daniel’s mother and father, Tyreek and Cheyenne, are both healthy.Daniel’s sister, Danielle, is healthy. Their brother John has tongilitis.Semone’s mother, Daisha, is healthy. Her father Malik has tongilitis.Daniel and Semone have three children. Noelani and Jaisha are both healthy, but Kaseem has tongilitis.