For the IB Biology course.

2. GenotypeGene expressionPhenotype Dominant allele Recessive allele Codominant allelesHomozygous HeterozygousCarrierMixed phenotypeAutosomeSex chromosome Gene locusMonohybrid crossTest cross

4. State the possible genotypes of a tall plant.

6. Explain how a test cross could be used to determine the genotype of a tall plant.

10. Mendel is known as the father of genetics for his extensive experimental work with peas and different types of crosses.

11. Complete the punnet grid below to show the outcome of the monohybrid cross that results in peas of different colours.

12. Complete the punnet grid below to show the possible outcomes of a cross between two members of the F1 generation. Describe all genotypes produced.

13. Human ABO blood types follow a codominant inheritance pattern.

15. allelesiIAIBiIAIB

16. Highlight the genotype and phenotype which is an example of codominance.

17. Complete this pedigree chart to show the inheritance of blood types in this family.

18. 47625031115

19. Sickle cell is another example of codominance.

20. State the genotypes and phenotypes of these individuals.

21. HbAHbAHbAHbsHbsHbsgenotypephenotype

22. Predict the phenotype ratios of offspring in the following crosses. Show all your working, and set it out as expected. Take care with notation.

23. Carrier mother with affected father

24. Affected father with unaffected mother.

25. Carrier mother with carrier father.

26. Explain how the prevalence of sickle cell in regions of Africa is an example of natural selection in action.

31. The pedigree chart below shows a family affected by sickle cell:

32. -9525116649500Deduce the genotype of each individual with a letter.

33. AFBGCHD$E#

34. Calculate the likelihood of any further children produced by E and her # having sickle cell anemia.

35. Male $ is healthy but of unknown genotype. Calculate the likelihood of any children produced with female D having sickle cell anemia. Show all working.

36. Some traits are autosomal whereas others are carried on sex chromosomes.

37. Distinguish between autosomes and sex chromosomes.

40. Annotate the diagram to distinguish between the X and Y chromosomes.

41. Outline the role of the SRY gene on the Y chromosome.

45. Outline how non-disjunction can lead to gender-related chromosome abnormalities.

49. Some inherited disorders are associated with gender.

50. Define sex-linkage.

51. State two examples of sex-linked genetic disorders.

55. Explain why sex-linked disorders are more common in males than females.

60. Explain why human females can be homozygous or heterozygous for sex-linked genes, where males cannot.

65. Hemophilia is a blood-clotting disorder that is also recessive and sex-linked.

66. State the normal function of the gene associated with hemophilia.

67. Describe the effects and symptoms of hemophilia.

70. Use the pedigree chart to deduce the possible genotype(s) of the named individuals.

71. -2095563500LeopoldHelenAliceMaryRubertBobBritney

72. Outline one form of genetic engineering used to help patients with hemophilia.

78. Suggest reasons why the frequency of some disease-related alleles might be increasing in the population.

80. Works Cited BIBLIOGRAPHY 1. Allott, Andrew. IB Study Guide: Biology for the IB Diploma. s.l. : Oxford University Press, 2007. 978-0-19-915143-1.2. Mindorff, D and Allott, A. Biology Course Companion. Oxford : Oxford University Press, 2007. 978-099151240.3. Clegg, CJ. Biology for the IB Diploma. London : Hodder Murray, 2007. 978-0340926529.4. Campbell N., Reece J., Taylor M., Simon. E. Biology Concepts and Connections. San Fransisco : Pearson Benjamin Cummings, 2006. 0-8053-7160-5.5. Taylor, Stephen. Science Video Resources. [Online] Wordpress, 2010. http://sciencevideos.wordpress.com.6. Burrell, John. Click4Biology. [Online] 2010. http://click4biology.info/.7. IBO. Biology Subject Guide. [Online] 2007. http://xmltwo.ibo.org/publications/migrated/production-app2.ibo.org/publication/7/part/2/chapter/1.html.<br />Self Assessment:<br />Essential BiologyAssessmentCriterionComplete (2)Partially complete (1)SelfMrTPresentation & OrganisationNAComplete and neat. All command terms highlighted, tables and diagrams well presented. Academic HonestyNASources cited using the CSE (ISO 690 numerical) method, with Works Cited section complete and correct. Objective 1 understandingAll answers for the following command terms correct:Most answers for the following command terms correct:Define Draw Label List Measure StateObjective 2 understandingAll answers for the following command terms correct:Most answers for the following command terms correct:Annotate Apply Calculate Describe Distinguish Estimate Identify OutlineObjective3understandingAll answers for the following command terms correct:Most answers for the following command terms correct:Analyse Comment Compare Construct Deduce Derive Design Determine DiscussEvaluate Explain Predict Show Solve Sketch SuggestLogic, notation, mathematical workingNAAnswers are presented in a logical and concise manner. SI units used most times, with correct unit symbols and definitions of terms. All mathematical working shown.Further researchNAEvidence is apparent of research and reading beyond the textbook and presentations to find correct answers to challenging questions. If any questions are unanswered, this criterion scores zero. Total (max 10):<br />