Monday, November 29, 2010

Meiosis.. NOT Mitosis!

Welcome back gang!  Today was a first day back after a LONG Thanksgiving break.  Everyone was thrilled to be back at school... I know I was! 

Today we started talking about meiosis.  First of all, meiosis is NOT mitosis... they are quite different processes... though they make look similar the outcomes are very different. Mitosis is normal cell reproduction.  Meiosis, however, is the process that makes egg and sperm.

We spent a lot of time talking about chromosome numbers and the difference between haploid and diploid cells.  It is very important that you understand that diploid cells have HOMOLOGOUS pairs of chromosomes... in other words, two copies of each chromosome....  Homologous chromosomes contain the same genes in the same location on the chomosome, however, they may be different FORMS of the gene.... that is because one copy came from your mom and one came from your dad.

If you are confused about what happened in class today, it is ESSENTIAL for you to get it squared away ASAP because the coming stuff will confuse you more if you don't have a solid foundation. 

Below are the notes from today's class if you missed it!

This always makes me laugh! Anyone wanna learn it an sing it for the class???






A good summary of meiosis...but there are others out there on youtube... find 'em! Post 'em!


Homework for tonight...
-UP 13-14 - be sure to color and annotate (ie: notes in the margins)
-READ 11.4... do either a flow map titled "Steps of Meiosis" or a double bubble map titled "Meiosis vs. Mitosis"

Next scribe is Andjela!

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