Your Federal Quarterly Tax Payments are due April 15th Get Help Now >>

Karyotype online activity by l02bd48

VIEWS: 27 PAGES: 2

									           KARYOTYPING
           An Online Activity




The purpose of this activity is to investigate a procedure called karyotyping. A karyotype is a
map of one’s chromosomes. Such a genetic map can be important in detecting certain genetic
disorders such as Edwards syndrome and Cri-du-chat. Your assignment is to complete the online
karyotype found at the site below which entails evaluating 3 patient case histories, completing
their karyotype, and diagnosing any missing or abnormal chromosomes they may have.


http://www.biology.arizona.edu/human_bio/activities/karyotyping/karyotyping.html


Introduction
Go to the above address and read the introduction on karyotyping and G banding.
       1. Why are cells undergoing mitosis used for karyotpying?




       2. How are chromosomes analyzed? List 3 ways.
          a.

           b.

           c.


After reading the opening page, click on “Patient Histories”.


Patient A
Read patient A’s history and click on “Complete Patient A’s Karyotype”. Match the
chromosome in the upper left corner with one of the chromosomes further down on the page by
clicking on the number below the chromosome. Repeat this process until all chromosomes are
paired up correctly. The computer will allow you to correct all mistakes you may have made.
Patient A
       A 1. What notation would you use to characterize Patient A's karyotype?




       A 2. What diagnosis would you give patient A?




Patient B
Repeat the procedure for patient B as you did for patient A.

       B 1. What notation would you use to characterize Patient B's karyotype?




       B 2. What diagnosis would you give patient B?




Patient C
Repeat the procedure for patient C as you did for patient A.

       C 1. What notation would you use to characterize Patient C's karyotype?




       C 2. What diagnosis would you give patient C?




Q: Do the chromosomal disorders in this activity affect a single gene, and therefore a single
protein, OR several genes and several proteins? Explain.

								
To top