Karyograms and non-disjunction.

IB Biology: Karyograms and non-disjunction.

In three short activities student explore how non-disjunction can lead to changes in chromosome number. This is illustrated by reference to Down syndrome (trisomy 21). Students will watch a six minute video clip, complete a powerpoint karyotype activity and then analyse several karyotypes using a worksheet. To finish there is a review sheet containing some IB style questions.What would happen if a chromosome doesn"t...

To access the entire contents of this site, you need to log in or subscribe to it..

Click the free stuff button on the home page to access free pages or check the blog (which is also free).

All materials on this website are for the exclusive use of teachers and students at subscribing schools for the period of their subscription. Any unauthorised copying or posting of materials on other websites is an infringement of our copyright and could result in your account being blocked and legal action being taken against you.