Gene Linkage and Nondisjunction

What's a karyotype? What happens when homologous pairs don't split evenly during anaphase 1? How can scientists determine how close together genes are on a chromosome?

These are just a few of the questions we answered yesterday and today.
Homework: study for the test tomorrow. You can pick up your quizzes on the class door after school today.

Quiz and Meiosis

Today students had a 20 minute quiz on sections 11.1-11.3. After which we started to learn about meiosis.

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We watched the video clip above and then took notes on the individual stages of Meiosis as well as the difference and importance between haploid and diploid cells.

Homework: Draw and label the stages of meiosis (from pages 276-277 in your book).

Stem Cells, Regeneration & Cloning

Today, tomorrow and Friday (depending on when your class meets) we will be expanding on the minuscule amount of information in your text on stem cells, regeneration and cloning. Using video clips and animations from HHMI's 2006 Holiday Lecture Series, we will learn, among other things, where embryonic stem cell come from, prior theories on human development and about somatic cell nuclear transfer.

Click here for video clips

Click here for animation

Welcome Back with Gene Regulation

Today we slowly got back into the swing of things by learning about gene regulation in prokaryotes. In the next class period we will delve into cell differentiation and stem cell research using video clips from the HHMI lectures.

Chapter 11

We will begin chapter 11 when you return from break. You have been emailed the first part of the packet for section 11.1.

Please print this out and bring it to class on Tuesday. You will also need to read pages 208-209 BEFORE coming to class on Tuesday Feb 3.


We will be taking notes on gene regulation in prokaryotes as well as watching some video clips.