Tuesday, March 17, 2009

Monday: Today we continued with "mating" from Friday. So you and your partner should make a Punnet Square using your traits. Remember, you have to make 1 Punnet Square per trait. For your class' special trait (ours were spiky legs) and the sex chromosomes (xx or xy) you have to make a Dihybrid Square (or rectangle...). After you make the Punnet Square/Dihybrid Square, you have to choose one of the boxes by chance. So for example, say this was your Punnet Square for dots:










You would decide which genotype to use by flipping a quarter onto the Square, or even number each square in the Punnet Square, put each number (on a piece of paper) in a cup, and then randomly choose one. Use the same method for the dihybrid Punnet Square too. When you finish making Punnet Squares and choosing genotypes for each trait, make a chromosome "list". If you look on your ORIGINAL paper that Fins passed out, (our very first generation) underneath the long list of chromosomes is a color. Mine was light brown and my "mate" had gray. So when you make the chomosome list, use your color to shade in the boxes with chromosomes you contributed, and use your partner's color to shade in boxes with chromosomes that he/she contributed. Today you should try to finish up your first generation and start on your second! Remember, after you finish making your second generation, you use that bug to mate with someone else. So let's say you were a female bug who mated and had a boy. You automatically become a male bug and must find a female bug to mate with. Fins also announced that if you tutor anyone from hs science class during homeroom (you have to tutor them well!!!!!!!!) then you get an extra credit point! So take advantage of this oppurtunity!!

Tuesday: Since today was the Science Olympiad, Fins wasn't in class today...so we had a sub. We pretty much continued what we did from yesterday. We continued to mate, make Punnet/Dihybrid squares, and draw bugs. When you finish drawing your bug on normal printer paper, you have to cut out your bug and glue it on an index card. On the back of the index card you have to write down that bug's genotypes. Try to finish up your second generation today, if you have time you could start you third generation.

Wednesday: Fins was back today, and our school did really well in the Olympiad!! Out of 27 schools we got 6th place :D But anyway, today we did what we did on Monday and Tuesday...mate. We did learn new terms for generations though:

    • 1st Generation: P1 (I think P stands for parent)
    • 2nd Generation: F1 (What does F stand for?)
    • 3rd Generation: F2
    • 4th Generation: F3

So today try to finish your third generation. If you do that your fine, but if you don't, then that's your homework for tonight.

Thursday: Today most of us (except for Brian and a few other people) found out that their chromosome list was done the wrong way. For your very first generation (P1), both columns should be the same exact color. For your second generation (F1), both columns should be 2 different colors (Mine were light brown and gray). The third generation is where things get a little trickier, you should have had a maximum of 4 colors...I think. For generation four, you should have ummm...I don't really remember, I think you should have had 8 colors. A lot of us just put two colors for each column on each generation. So I'll go through it step by step. So let's say this was your first generation:

  • L l
  • r r
  • B y
  • D d
  • W W
  • F F
  • s s
  • x x

So this list would be the color that is written on yor orignal sheet. So since my color was light brown, both columns are light brown. This is generation two (F2):

  • L L
  • R r
  • B G
  • d d
  • W W
  • C C
  • x x
  • s s

So the column on the left is gray because my first partner had gray as their color, and the right is light brown because that was my color. This is the third generation, (F2) pay close attention!

  • x x
  • s s
  • L l
  • R R
  • G y
  • d D
  • W W
  • C F

Ok, so my left column has 1 gene that is gray. Why? because if you look at P1, you will see that I did not have a capital R as one of my genes, but in F1 my partner gave me the capital R gene, so that box has to be HIS color!! Get it?? The only reason the right column is brown too is because my partner's color was also brown. The right column is all one color because my partner had each of those genes from P1. So here is generation 4 (F3):

  • L L
  • R R
  • G G
  • D d
  • W W
  • C F
  • s s
  • x x

So in this one, my partner's genes (on the right) were blue, except for 2 (R and d), those were obviously contributed by someone else who had those genes in that color. My genes are all light brown except for the capital R, but that was given to me during P1! So we really spent the whole class fixing up our bugs. Fins was in another classroom, so we had a substitue. Ummm...for homework, make sure you fix all four of your bugs!

Friday: Today was super fun!!! So today we went over the bugs we were supposed to fix last night. If you didn't turn them in today, TURN THEM IN ON MONDAY!!! They are worth four homework grades! Fins made sure that all of our bugs were done the right way. If something was wrong with your bug, then you had to fix it in the back of the room, if your bug was ok, then you got to watch SPIDERMAN!!! For homework DON'T BLOG (:D)! Instead, fix your bugs and make them perfect, no mistakes! In other related news, did you guys hear that Fins got 6 flowers??? He got 5 pink ones and 1 white one!!!!!!!!

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