This bundle product offered by Spyglass Biology contains a single worksheet about disorders caused by nondisjunction as well as reading karyotypes to identify the disorders. The 5 disorders are Down syndrome, Klinefelter’s, XYY syndrome, Turners syndrome, and Trisomy X. A review of the genotypes for these disorders or how to identify them in a karyotype should be taught before this assignment. I have provided a PowerPoint presentation of the sex chromosome disorders that could be used to introduce them before giving the assignment. The PPT does not introduce Down syndrome (trisomy 21) because it is an autosomal disorder, however, my students don’t have a problem identifying it after learning to read a karyotype. There are 15 questions total on the worksheet.
This product contains an 8 slide PowerPoint presentation for introducing the sex chromosome disorders caused by nondisjunction, the student worksheet as a Word document, a PDF of the worksheet, and the answer key. The worksheet is 2 pages with 15 questions/problems.