Download Human Karyotyping Activity

Human Karyotyping Activity
Name________________________________
Pd _____________
For this activity you will need to access the following page: (it is also on my website –
click on Biology, Schedule, and go to the date – there is a link there!!)
http://www.biology.arizona.edu/human_bio/activities/karyotyping/karyotyping.html
1. Read the introduction and answer the following questions.
A. What is a karyotype?
B. How many pairs of chromosomes are present in a human cell?
C. What is the purpose of the Giemsa Dye?
2. Read your “assignment”. Then click on PATIENT HISTORIES. Begin by
clicking on PATIENT A.
3. Once you have correctly completed the karyotype for patient A, read the information
and answer the following questions.
A. How many chromosomes does Patient A have?
B. What notation would you use to characterize Patient A’s karyotype?
C. What diagnosis would you give Patient A?
4. Proceed to the history of Patient B. Complete the karyotype and answer the following
questions.
A. How many chromosomes does Patient B have?
B. What notation would you use to characterize Patient B’s karyotype?
C. What diagnosis would you give Patient B?
5. Proceed to the history of Patient C. Complete the karyotype and answer the following
questions.
A. How many chromosomes does Patient C have?
B. What notation would you use to characterize Patient C’s karyotype?
C. What diagnosis would you give Patient C?
Analysis Questions
1. How is karyotyping helpful?
2. What chromosome pair determines the sex of the baby?
3. Which parent determines the sex of the baby?
4. What ethical issue can arise when performing genetic screenings in pregnancy?