MONOHYBRID CROSSING GENETICS AND :BLOOD GROUPS & GRADE 12 SUBJECT LIFE SCIENCE WEEK 13 TOPIC Lesson 1 INHERITANCE MULTIPLE ALLELES Time: 40 LESSON SUMMARY FOR: DATE STARTED: DATE COMPLETED: The learners must be able to: List the four blood groups LESSON OBJECTIVES State that blood groups are controlled by multiple alleles Do genetic crosses to determine the genotypes of blood groups of parents and offspring. LEARNER ACTIVITIES TIMING RESOURCES NEEDED TEACHER ACTIVITIES Introduction: Take few minutes to discuss the answers of previous homework 10min Revise with learners that homozygous recessive alleles with your teacher will appear as a dominant phenotype. Learners copy table on blood groups from chalkboard/ Explain to learners that disorders which occur from powerpoint. chromosome pair 1 to 22 are known as autosomes. SIIP Booklets for 2014 Learners take down following table to be used when working out compiled Question Main Body (Lesson presentation): possible genotypes between babies and parents. Teacher explains that there are: papers and answer Four types of blood groups ,namely , A, B, O and AB booklets All blood groups controlled by three alleles IA, IB and i Homework: (multiple alleles). O is a recessive gene Worksheets Blood group O is a universal donor ie. anyone can Give learners a case study on the swopping of babies in a hospital. receive blood from a person with blood group O but , Need to determine the genotype of parents and match with A person with blood group O can only receive blood genotype of baby using genetic crosses to determine correct 20 min CAPS 12 Life science from a donor with blood group O parents. ( ACTIVITY 5.5. PG 78) for All by Teacher write the following symbolic representation of Learners observe diagram below to get further understanding of McMillan genotypes of the various blood groups. parents genotypes and their resulting offspring. Focus on Life science The diagram shows a family tree with the blood group phenotypes CAPS Gr 12 by Maskew filled in for some members of the family. A square is used to Miller represent a male and a circle is used to represent a female. There are three alleles for blood groups represented by the Understanding Life letters: IA, IB and i .Select the correct genotypes for science Gr.12 by T
GRADE 12 SUBJECT LIFE SCIENCE WEEK 13 GENETICS AND INHERITANCE TOPIC MONOHYBRID CROSSING :BLOOD GROUPS & MULTIPLE ALLELES Time: 40 Lesson 1 LESSON SUMMARY FOR: DATE STARTED: DATE COMPLETED: LESSON OBJECTIVES The learners must be able to: List the four blood groups State that blood groups are controlled by multiple alleles Do genetic crosses to determine the genotypes of blood groups of parents and offspring. TEACHER ACTIVITIES LEARNER ACTIVITIES TIMING RESOURCES NEEDED Introduction: Revise with learners that homozygous recessive alleles will appear as a dominant phenotype. Explain to learners that disorders which occur from chromosome pair 1 to 22 are known as autosomes. Main Body (Lesson presentation): Teacher explains that there are: Four types of blood groups ,namely , A, B, O and AB All blood groups controlled by three alleles IA, IB and i (multiple alleles). O is a recessive gene Blood group O is a universal donor ie. anyone can receive blood from a person with blood group O but , A person with blood group O can only receive blood from a donor with blood group O Teacher write the following symbolic representation of genotypes of the various blood groups. Take few minutes to discuss the answers of previous homework with your teacher Learners copy table on blood groups from chalkboard/ powerpoint. Learners take down following table to be used when working out possible genotypes between babies and parents. Homework: Give learners a case study on the swopping of babies in a hospital. Need to determine the genotype of parents and match with genotype of baby using genetic crosses to determine correct parents. ( ACTIVITY 5.5. PG 78) Learners observe diagram below to get further understanding of parents genotypes and their resulting offspring. The diagram shows a family tree with the blood group phenotypes filled in for some members of the family. A square is used to represent a male and a circle is used to represent a female. There are three alleles for blood groups represented by the letters: IA, IB and i .Select the correct genotypes for 10min 20 min SIIP Booklets for 2014 compiled Question papers and answer booklets Worksheets CAPS 12 Life science for All by McMillan Focus on Life science CAPS Gr 12 by Maskew Miller Understanding Life science Gr.12 by T
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