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Lecture 45

Lecture 45. Mr. Sover 9 December 2009. Collect Homework. Quiz. Clear off desks and silence yourselves. Quiz. 1. What are the blood types (phenotypes)?

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Lecture 45

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  1. Lecture 45 Mr. Sover 9 December 2009

  2. Collect Homework

  3. Quiz • Clear off desks and silence yourselves.

  4. Quiz • 1. What are the blood types (phenotypes)? • 2. A man with AB blood reproduces with a woman with heterozygous B blood. What are the most probable genotypes for the children? Use a Punnett Square for help (2 points). • 3. Remember, eye color in drosophila is considered to be sex-linked. Red eyes are dominant over white eyes. If a Red-eyed male reproduces with a female who is a carrier for white eyes, what are the most probably genotypes for the children? Use a Punnett Square for help. (2 points). • 4. If you could eat a person in this room, who would it be and why?

  5. Begin Lecture

  6. Chapter 8-Be Sure to know… • Dominance • Codominance • Incomplete Dominance • Sex-linked traits

  7. Human Genetic Disorders • Created by the production of abnormal proteins.

  8. Cystic Fibrosis • Most notably it harms which organ systems? • 1. • 2. • Passageways become plugged up with mucus. • Infection • Proper digestion cannot occur. • Enzymes • The transport of ions across cells is abnormal.

  9. Chloride ions trapped. • The mucus becomes thick and is not swept away. • Child with CF

  10. Huntington’s Disease • Not recessive! • Deteriorating brain cells. • Memory loss • Irritability • Jerking extremities • Eventual death

  11. Homework • Do pages 43-45 of the chapter 8 study guide.

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