On Monday we had a snow day!!!!
On Tuesday we made a chart of the 7th grade science class traits. Then we used the results to show what traits are dominant and recessive. For example, being able to taste a PTC taster would be a dominant trait. It only takes one dominant alleles to be dominant. For home work we had to answer if you could tell that somebody is heterozygous by a trait. You can't tell because you would have to see the alleles.
On Wednesday we went over our charts and figured out what traits are recessive and what traits aren't.
On Thursday we took our egg and sperm cells that we made for home work. We put traits on them and then put them in a cup. This was to prepare for our lab on Friday. It was to support our predicted punett squares. We would pull out an egg and sperm and match the traits four times. Then we compare the results to our original punett squares.
On Friday, we did the lab that I explained. My groups expected punett squares matched our results. Then we tried one trait again and I did not match.
I think that we did this because we needed to see how traits get passed on from generation to generation.
Friday, March 6, 2009
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