Karyotype websites:

How do scientists read chromosomes?

http://learn.genetics.utah.edu/content/begin/traits/scientists/

 

Make a karyotype

http://learn.genetics.utah.edu/content/begin/traits/karyotype/

 

Karyotyping Activity

http://www.biology.arizona.edu/human_Bio/activities/karyotyping/karyotyping2.html