Punnet squares are used to find genotypes of offspring. You can use letters to represent a genotype, but most genotypes already have there represented letters.
        A punnet square is obviously shaped into a square. It is cut into fourths, and to find an offspring's genotype, you have to do the following steps. First step is to put both of the parents' genotype above two sides of the squares, which is the top side and the left side. The next step is to cross over the two genotypes. So for example, we're looking to see if two parents will have a brown-haired kid, or a blond-haired kid. Blond is the recessive, while brown is the dominant. The letter that will represent brown is "B," while the blond representative will be "b." Put the parent genotypes on the top side and the left side, so in this example, Mom's genotype will be "BB," which makes her hair brown, and the Dad's genotype will be "Bb," which also makes his hair brown. Now cross the left side genotype with the top side genotype. "Bb" is top side, and "BB" is left side. So first, cross the first "B" with the first "B" on both top and left side, which makes "BB." Write that in the punnet square. Then continue and do the same thing with both sides.
        Punnet squares are really easy to use. It doesn't matter what genotype goes w
 
    Science is my most difficult class. The main reason is because I have a hard time trying to remember the scientific names for things that we had to learn. Since it's so long, I'm not used to using long words like that. Especially if it's for something that already has a name. 
       Throughout the last two quarters, my main struggles have to be in the cells unit. Sure, there were plenty of fun experiments and activities we did, like the edible cell project, however, it was the tests and the quizzes and myself that made it hard for me. I blame myself because I didn't properly use the study guides we were given. All I did was just look at it, read a couple of words, and then put it away. This year will be different, however, because I will try to make up for my bad grades. Anyway, there were many names and definitions. We even had to figure out who found cells! The tests questions were hard too. About 2 of my notebooks weren't complete, which led it to a "C." 
        This quarter, I will make up for all my mistakes and study properly. I won't try to mess up this time, or use any shortcuts, because that's what led me to my downfall. This year is going to be different.
 
     DNA replicates in a process called mitosis, along with the cell. There are 6 different stages in mitosis, and the DNA being copied is in the majority of them. 
     The first stage is called interphase. Interphase is the phase when the cell rests and grows for most of its life time. Then, after this phase, the first phase of mitosis is called prophase. In this phase, the chromatin and nucleus slowly start to form chromosomes. The third phase is called metaphase. Metaphase is when the chromosomes have become attached to spindle fibers. After this one, is the fourth phase called anaphase. Anaphase is when the centromere splits and the two move apart to the opposite sides of each other. Next is telophase, in which the chromosomes stretch out and and become daughter cells. The last phase is cytokinesis, in which the new cells pinch in two. Plant cells in mitosis have a cell plate formed, in which the cell plate splits them apart.
     Copying DNA is a very important job for our bodies. It allows us to be healthy and grow.