KARYOTYPING INTERNET ACTIVITIES
Name________________________________________________Period_____
Go To: http://www.biology.arizona.edu/human_bio/activities/karyotyping/karyotyping.html
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Read the introduction.
Click on Patient Histories.
As you complete Patients A, B, and C, you will print out the completed karyotype.
Write the identity of the genetic disorder of each:
PATIENT A____________________________
PATIENT B____________________________
PATIENT C____________________________
NOW GO TO: http://learn.genetics.utah.edu/content/begin/traits/karyotype/
1. Click and drag the chromosomes from the left to the correct location on the right.
2. Print a copy of your completed karyotype.
3. Is this karyotype a male or female?_________________How do you know?__________
NOW GO TO: http://learn.genetics.utah.edu/content/begin/traits/predictdisorder/
1. A normal karyotype has how many chromosomes?______
How many autosome pairs?_______________sex chromosomes?___________
2. Click and Play the Meiosis Animation for review.
3. Click and Play the Fertilization Animation:
How many chromosomes are in a human egg?___________ a human sperm cell?_________
4. Click and Play Abnormal Meiosis. What was the abnormality shown?
5. Click and Play Trisomy. How many total chromosomes exist in this disorder?_________
6. Click and Play Monosomy. Describe what is monosomy:
7. Click and Play Deletions. What is a terminal deletion?___________________________________
What is an interstitial deletion?__________________________________________________
8. Click and Play Translocations. What is a reciprocal translocation?
What is Robertsonian translocation?
Karyotyping Internet Activities p. 2
9. Take the QUIZ. Write your answers here for each question:
a. XX = ______________
c. XY = _______________
b. XO = ______________
d. 21 X + 21 X = ______________
e. XXY = _______________
f. 21 + 21 + 21 = _________
NOW GO TO: http://learn.genetics.utah.edu/content/begin/traits/
Click on telomeres. (right side) Read “Are Telomeres the Key to Aging and Cancer?”
1. Where are the telomeres located on a chromosome?______________________
2. What are they made of?_______________________
3. How many times do normal cells divide?____________________
4. What might happen to chromosomes if they did not have telomeres? (what was the analogy?)
5. What is the name of the enzyme that adds to telomeres?__________________ does this every
run into short supply in the life of the cell?__________
6. What is the correlation to the length of telomeres and cancer?
7. What are three other factors that affect aging besides telomere length?
NOW GO TO: http://learn.genetics.utah.edu/content/begin/traits/
Click on PTC: The Genetics of Bitter Taste (left side)
1. What does the PTC do?
2. What percent of people can tastes PTC? _______________what percent cannot?______
3. What does PTC stand for?________________________4. Who are more likely to be smokers, those that can taste PTC or those that cannot?______
5. YOU WILL BE GIVEN A PTC taste strip to see which you are:_____________________
6. Do you like broccoli?____________________ Do you like coffee?_______________