Todays blog will be about Punnet squares, and what they are used for. First of all, a Punnet square is a chart that shows different possibilities for someone or something to look like. It lists all the possible genotypes for your child, or anything you want to see the outcomes of. Geneotypes, can be Bb, bb, or BB. A phenotype is your physical appearance Now, if I did not well describe how Punnet squares look like, they look like a square with a vertical and horizontal line right in it. At the top and side of the Punnet square, you put the father's and mother's genotype of whatever it is that you want to see the possible outcomes of. For example,if the father's genotype for brown eyes would be Bb, you would put that at the top or side of the Punnet square. If the mother's genotype for blue eyes was bb, you would put that on the top or bottom of the Punnet square. Once you have figured out the two genotypes, you are ready to find out the possibility of the offspring. This is why people use punnet squares to find out how their offspring would look like.
This is it for todays blog. I hope that you have learned a couple of things or two about this science lesson. If you really pay attention to punnet squares, you start to get the hang of it. Punnet squares are really just a chart showing all the possible genotypes for the offspring. To help you out a little bit more, just remember these vocabulary words: phenotype means your physical appearance genotype is the letter of your appearance and a punnet square is just a chart listing all of the possible genotypes for that particular thing. This is what we are currently learning in Mrs. Poole's science class.
Today is Science Solutions Tuesday. In this blog, I will be blogging about how to make the DNA ornament that we made about a month ago. First, you need different colored beads. The beads will represent the bases, and sugars, and everything that is inside the DNA. Then you need wire, the length of a yard. The last thing you need is optional, you may need a plastic bag, to keep all of your pieces in. The second step is to put seven of the different colored beads on a wire, this is a kind of a hard step to do, because then once the seven beads are put on the wire you need to loop it to the other side, and grab the other wire and loop it to the opposite side of the wire. This is kind of hard to explain. After you have done this the next steps are to repeat this step again until you have as many rows as you want. When you are done, the next step is to loop both strings though the middle, and pull them as hard as you can. Once you are done with that, you cut what ever is left of the wire off. The last step is to twist the ornament, so it will look like a double helix.
This blog explaines how to make this, and the materials you will need to make it. Step number two was pretty tricky to explain, so I hope you understand this concept that I am trying to make. Like I had said before, it was not easy to explain, so try to Google " DNA bead ornament , and that will possibly give you a better described idea. This is it for today, and I hope that you have learned something new and cool.
Today's post will be about the hardest lesson that I have encountered over the past semester. That lesson is learning the parts of a cell. When my science teacher first taught us the parts of a cell and where they we located, it was pretty hard for me to memorize them all and know were all of them are. After a week, she started to talk about the parts all the time so I kind of got them. Finally, Mrs. Poole introduced the cell cake. The cell cake is a cake that you have to design the parts of a cell and label them. At first I did not feel good about this project, because I knew little about the cells, but when I opened the science book to see how it looked like I started to read and understand the book more, and more, because I always had to glance at the book to really get a feel of what this cake is going to look like. Once we made the cake, I could already tell were all the parts are and what they do. The more I was really focusing on this project, I knew more and more about the cell. Now I can name some of the cell parts and tell you what they mean.
The lesson that I have learned from this was to never give up and to really focus on something you are not really sure of. I really like to do projects like these, because it helps me learn more and more, than just getting a book and reading almost half of it. I feel that if more and more teachers start to do "hands on" activities, then you will see more children and adults start to pay attention and really memorize all of this. This is how I know were all the cell parts are and what they do.
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