Sunday, March 29, 2009

Genetic Variety


Genetic Variety is where there are alot of different genes. Like when you have genes from your mom and dad. You also have genes from your grandparents and great grandparents and so-on. Genetic variety played an important role in our reebops by making all of the different traits. Your F1 bug could be totally different than your F2 bug. But your F3 bug could look almost exactly the same as your F1 bug. Like with me, my P1 bug has long legs, but my F1 and F2 have short legs. You could see the variety by looking at the genotypes on the back of the bugs. Each color represents a gamete coming from someone. You could have not of come in contact with that person and have their gene in one of your bugs. Most people in our class had one of almost everyones genes. Without genetic variety the bugs would be all the same and boring.

March 23-27

All week we worked on our genetic projects. You had to do things like write summaries and blog about the bugs that everyone did last week. We also researched agenetic disease and made a wikipage. I did alzeimer's. We also had to make a recording on how to use a punnet square. This helped us understand genetics more.

Saturday, March 14, 2009

March 9-13

This week we made our official coclusion on how punnet squares work. We said that the punnet squares were a bunch of mutally exclusive events. This means that it did not depend on past events like when your flipping a coin. When you flip a coin it doesn't matter what the last flip was it is still a 50\50 chance. Even if there were ten tails it doesn't mean that the next flip would be heads. With the punnet square just because one thing already happened doesn't it mean it can't happen again or many times again. After we finished this we started focusing on the kinds of dominance. Incomplete dominance is when one allele is not completely dominant some of the recessive allele shows through, this is a phenotype thing. With co-dominance it is more of a genotype thing where both of the two different alleles are preasent. Now we are working on aproject focusing on genetic diseases. I'm thinking focusing on Arthitis.

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!!!!!