Lecture 26 exceptions

Lecture 26 exceptions - Lecture 24 - Extensions and...

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Mendelian Inheritance Campbell, Chapter 14 pp 260-273 1.   Give an example of incomplete dominance and explain why it does not support the blending theory of inheritance. 2.   Explain how phenotypic expression of the heterozygote differs from complete dominance, incomplete dominance, and codominance. 3.   Explain why Tay-Sachs disease is considered recessive at the organismal level but codominant at the molecular level. 4.   Explain why genetic dominance does not mean that a dominant allele subdues a recessive allele.  5.   Describe the inheritance of the ABO blood system and explain why the IA and IB alleles are said to be                                       codominant. 6.   Define and give examples of epistasis. 7.   Describe how environmental conditions can influence the phenotypic expression of a character.  8.   Distinguish between the specific and broad interpretations of the terms phenotype and genotype.    9.   Given a simple family pedigree, deduce the genotypes for some of the family members. 10. Describe the inheritance and expression of Cystic fibrosis, Huntington’s , and sickle-cell disease. ADVICE: Doing the problems at the end of the chapter will help you understand genetics. You will see similar types of problems on the exam.  
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Lecture 26 exceptions - Lecture 24 - Extensions and...

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