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Hello everyone - so I foolishly chose this ( http://www.sciencebuddies.org/science-f ... ml#summary
) project for my science class. I know barely anything about genetics or whatever. But I like cats.
It's too late to turn back now, so I'm asking for help...
What exactly would the hypothesis be like...? I know I'm drawing lines on cat faces, but that doesn't help anything. I think I wrote this for my hypothesis earlier: "If the X-Inactivation gene causes the colors of a tortoiseshell cat, and they all have similar genes, then their faces will be somewhat similar color-wise."
Now I'm having second thoughts.
I have no idea what the independent/dependent/constant/etc etc would be. I'm totally lost.
I have the pictures of the cats printed out, the lines drawn on their faces, the tables and graphs made, but now I'm to the part where I have to write a paper. God help me.
Or any of you guys, that would probably be easier.
Thank you so much!!
- Posts: 1
- Joined: Fri Sep 28, 2012 11:58 am
- Occupation: Student 8th grade
- Project Question: X-inactivation Marks the Spot for Cat Coat Color
- Project Due Date: About a week
- Project Status: I am conducting my experiment
You did not make a foolish decision, I promise. Your hypothesis is along the right lines, but it can use some tweaking.
X-inactivation is not exactly caused by a "gene". For an organism to display signs of X-inactivation, they need to have two different alleles that express the same trait. In the case of tortoiseshell cats, They have an Oo genotype, where big O expresses orange fur and the little o expresses black/brown fur. This means that one of the alleles is present on the first X chromosome and the other is present on the second X chromosome. Each cell on the cat has some chance of expressing either the big O phenotype or the little o phenotype.
Now that you know this, your hypothesis can be changed accordingly. You can go along the same lines as you were before and make an educated guess about whether X-inactivation in cats is random or follows some type of pattern. If you are having trouble writing your hypothesis and with indentifying dependent and independent variables, these links should help:http://www.sciencebuddies.org/science-f ... esis.shtmlhttp://www.sciencebuddies.org/science-f ... bles.shtml
If anything is unclear or you need any more questions answered, feel free to ask!
- Posts: 52
- Joined: Mon Oct 10, 2011 5:36 pm
- Occupation: Biotechnology Student
- Project Question: n/a
- Project Due Date: n/a
- Project Status: Not applicable
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