Wednesday, December 1, 2010

JAKE NELSON, 12/1/10

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Homework: finish pages 23-28 if you did not finish them in class

Mr.Paek briefly went over meiosis with us for a couple minutes and showed us a slide of the stages within meiosis.
Meiosis 1
Prophase 1- KNOW THIS IS THE STAGE WHERE CROSS OVER HAPPENS
Crossing over is when pieces of homologous chromosomes cross over and switch place, this results in variety of the offspring.
Metaphase 1
Anaphase 1

Telephase 1

Meiosis 2
Prophase 2
Metaphase 2
Anaphase 2
Telephase 2


Then Mr.Paek told us to do the lab on pages 23-28, which had to do with genotypes and traits. Heads means that it is a dominant trait (A). Tails means that it is a recessive, buy the only way it can be a recessive trait is if both the coins land on tails. That was our day in biology class.

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