Tuesday, December 7, 2010

Shortened Tuesday!

Agenda:
  • Get second stamp for unit packet 39-46
  • Take notes on genetic disorders
  • Assign homework: Unit packet 47-52
  • Assign extra practice pages in unit packet: 53-56 (**optional)

Because all the classes were shortened, we had little time to do much in class. We did notes and then had some time to continue our homework.

Notes:

Autosomal Recessive Disorders

  • Tay Sachs: Degenerative nerve disease, death early
  • Cystic Fibrosis: Causes mucus build up in the lungs, digestive and liver problems
  • Phenylketonuria: lack of enzyme needed to break down phenyl

Auto Dominant Disorders

  • Huntingtons Disease: Nervous system disease causes loss of muscle function
  • Achondroplasia: A form of dwarfism

Codominant Disorders

  • Sickle cell anemia- abnormal shaped RBCs don't carry o2 effectively
  • H^A H^A- normal
  • H^S H^S- sickle cell disease
  • H^A H^S- resistant to malaria

Chromosomal Abnormalities and Nondisjunction

  • Nondisjunction in meiosis results in gametes with abnormal chromosome numbers
  • Most cases produce gametes that are not viable

REMEMBER: Quiz is on Thursday!

The next scribe is: Olivia Pullano

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