Friday, March 6, 2009

March 2-6

This week we focused on genes and alleles. On Tuesday we made a graph of the classes traits and determined which were dominant traits or recessive traits. We thought about if you can see if someone is heterozygous just by looking at them. I thought that sometimes you can because sometimes the person goes through change of hair for example. But I thought most of the time you can't because they just show the dominant trait. So you don't know if the person is heterozygous or homozygous dominant. You can always find out from what the parents are.
On Thursday we had to figure out why when two dwarfs had three kids that are average when the punnet square only showed one part of the square for that to be possible. Then I suggested that the reason that three out of the four kids were average was because that every birth had the same odds of being average or a dwarf.
On Friday we experimented with this idea by making paper alleles and according to what the imaginary parents were for a specific part. We drew the alleles out of a cup and whatever we got that's what the imaginary kid would be. We found out that my theory was right. So we made a conclusion and had a take home quiz about genes, alleles, and spidermen. Everyone good luck on the quiz!!!!!

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