Name_____________________
Karyotyping Activity
Go To: http://www.biology.arizona.edu/human_bio/activities/karyotyping/karyotyping.html
Answer these questions before doing the online activity:
1. What is a karyotype?
2. How many times each year are karyotype analyses done in the U.S.?
3. What causes the dark bands seen on the photo of a chromosome?
4. Does each dark band represent a gene?
5. How many genes may be within one staining band?
Online Activity: Patient Diagnosis of Genetic Problems
Go to online site – Click Patient Histories Button at bottom of page – Work through
patients A, B, and C and answer the two questions for each patient below.
A 1. What notation would you use to characterize Patient A's karyotype?
A 2. What diagnosis would you give patient A?
B 1. What notation would you use to characterize Patient B's karyotype?
B 2. What diagnosis would you give patient B?
C 1. What notation would you use to characterize Patient C's karyotype?
C 2. What diagnosis would you give patient C?
Now answer one last question…
6. What kind of genetic problem can be easily diagnosed by analyzing a person’s karyotype?