Exam 1

Today we had our first exam. Stats:

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Lab 04 - Complex patterns of inhertance

Today students did the lab on complex patterns of inheritance, under the direction of Dr. Rod Anderson (since I was out of town).

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Lecture, chapter 6 - Cytogenetics

From Larry Gonick and Mark Wheelis' The cartoon guide to Genetics

© 1991 Harper Perennial

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Today we finished the chapter on cytogenetics.

We discussed cases of aneuploidy in sex chromosomes (Turner (X), Klinefelter (XXY), and "super male" (XYY) syndromes), structural alterations (duplications, deletions, inversions, and translocations (reciprocal and Robertsonian), and other abnormalities (Double Uniparental Disomy and fragile sites)

Reminders:

• Our first exam is on Friday. Lecture and lab topics will be included. There will be 40 multiple choice questions and 4 short essay questions.
• The first draft of the bioethics paper is due on Wednesday Jan 13.

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Lecture, chapter 6 - Cytogenetics

Today we started the chapter on cytogenetics.

We discussed chromosome terminology, the steps to prepare a human karyotype, and generalities about chromosome abnormalities: Polyploidy, aneuploidy, and the most common cases of each.

Emphasis was made on some cases of aneuploidy: (Patau syndrome (trisomy 13), Edwards syndrome (trisomy 18), and Down syndrome (trisomy 21)). Maternal age as a risk factor for the occurrence of trisomies was also discussed.

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