Virtual Karyotype Lab
Go to www.learn.genetics.utah.edu Then select chromosomes & inheritance under the genetic menu. Explore
the three sections under the Karyotypes menu to answer the questions below.
To "read" a set of chromosomes, scientists use three key features to identify their similarities and differences:
1. ____________. This is the easiest way to tell chromosomes apart.
2. __________________The size and location of Giemsa bands make each chromosome unique.
3. _________________________. Centromeres appear as a constriction. They have a role in the separation of
chromosomes into daughter cells during cell division (mitosis and meiosis).
What are centromeres for ?
Describe and draw the three centromere positions.
________________
________________
________________
__________________ is an organized profile of a person's chromosomes. Two chromosomes specify gender — _____
for female and ______ for male. The rest are arranged in pairs, numbered 1 through _____, from largest to smallest. This
arrangement helps scientists quickly identify chromosomal alterations that may result in a genetic disorder.
Give three characteristics of homologous chromosomes.
1.
2.
3.
Define autosomes:
Define nondisjunction:
Define Trisomy:
Define Monosomy:
Pick one genetic disorders resulting from too many or too few chromosomes.
Name of disorder you chose ______________________
1. Describe the disorder.
2. How do they get the disorder?
3. List symptoms of the disorder?
4. How is the disorder diagnosed?
5. How is the disorder treated?
6. Two interesting facts about the disorder?
What is a deletion and when does it happen?
Pick one of the genetic disorders resulting from chromosome deletions.
Name of disorder you chose ______________________
1. Describe the disorder.
2. How do they get the disorder?
3. List symptoms of the disorder?
4. How is the disorder diagnosed?
5. How is the disorder treated?
6. Two interesting facts about the disorder?
Define the two types of translocation and draw a picture of each.