Posts Tagged ‘dihybrid crosses’

Higher level genetics

Saturday, August 6th, 2011

This is Topic 10.  Syllabus guide here: IB-Biology-HL-Topic-10-syllabus-guide

Hopefully, much of this will be REVIEW.  I’m planning to spend 3 lessons – no more.

Firstly, meiosisHere’s what you need to know. BE CAREFUL with the vocab.

Next, dihybrid crosses and gene linkage.  This is the fun stuff! Presentation here.  PRACTICE makes maybe not perfect, but certainly BETTER 🙂

Lastly, polygenic inheritance.  What is it and how does it work? This will explain.

First assessment of the year will be MONDAY 15th AUGUST.

What phase of meiosis is shown in this picture?

Almost there!

Monday, June 6th, 2011

Claire's cakes by wuperruper on flickr

Just when you thought it was all over …. without you knowing it, we have been working through Topic 10, which is the higher level material on meiosis and genetics.  I am fairly happy that we will complete this before you disappear for a few well-earned weeks of rest.  Here is the syllabus guide for the topic, and a link to the presentation we used in class. IB Biology HL Topic 10 – syllabus guide

This presentation is an excellent review and extension of meiosis.  And this one is all about polygenic inheritance.

Good review presentations

Friday, August 14th, 2009

Here are some great presentations from an IB Biology teacher in Indonesia.  I’m sure he’d appreciate a word of thanks if you find them useful.

Dihybrid crosses, gene linkage and recombination

Polygenic inheritance

Meiosis HL

Chi-squared test

Linkage and recombinants

Thursday, August 13th, 2009

Here is the document we worked through in class today, with some extra bits on meiosis too.  Thanks to Mr. Boulton for the resource. Topic 10 notes

Dihybrid crosses

Monday, August 10th, 2009

Here are some good sites for information about dihybrid crosses.  There are also lots of practice problems to try.  We will use these in class on Tuesday.

1. This site has a lot of clear information and activities.  A good starting point.

2.  This site has several problems for you to work through with nice hints to help if you get stuck.

3.  The Biology Project from the University of Arizona is always worth a look, although it is quite advanced.