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Learning at Home - High School Coverage

Hey, guys, is Mr Edwards here today and I want to take some time. Teoh show you how to solve your genetics problems and how to fill out a planet square before began up. Like to quickly go over some key vote Kat terms that you absolutely have to know in order to be successful with any genetics problem. The first time I'd like to discuss is a little's. So a Littles make up the genes found within your DNA. Now these are lives can come in payers arm or and some of them or dominant, some of them or recessive. So when I say a dominant Alu, I mean in a little that will XP present that when president will be expressed and when I say the recessive in olio, I mean in a wheel that will Onley present itself in the FINA type in the absence of the dominant aloof. Now, when we look at a little's, we usually associate a lives with their Gino types. So Gino types represent the pairs of the Littles found with in a trait, often times we represent our Gina types with letters, and we typically use the letter off the dominant trait. So if I were saying Tall was dominant, the short then capital T Capital T would be a way that we would express a home is, I guess, Gina type dominant Gino. Now the FINA type is what you can physically see. So instead of saying Capital T Capital T, I can physically see that that plant is tall and I would call that plant a tall plant to be a little bit more specific. When we talk about a lil's and genes, we can say that it is. Are the Gino Types or home of Xigris? Dominant home is, I guess, recessive or hedgerows. Itis. So Homans, I guess, or pure, is angina type that is made up of the same to a little's. So, for instance, Capital T with a capital T or a lower case T with a lower case T. When we say header rows, I guess we talk about hybrids, and it's a Gina type that is made up of the dominant and recessive Alu. So, for instance, Capital T and lower Case T. So the problem that we have here today is that we have tall plants are dominant. The short plants and we're going to cross to head arose Vegas plants, and we want to know what is the probability of having a short plant. So let's fill out this planet square. First off, I want to break apart this problem, and I realized that my parent cross are two header rows. I guess plans now based off of what I told you at the Caballe hetero zegas means that we have two different and in this case, it's going to be big T little t. So my parents here would be big t little t crossed with a big T and a guilty because two hitters, I get plants across together. So to do my punished square, I fill out this or create this little box where I have four quadrants and I put one parent up top big T, little T and one parent alongside Big T Quilty and then come in and each one of these letters will be filled in in the box that's underneath it or to the side of it. So, for instance, I could take this Big T and I'm gonna put one right here, and I'm also going to put it right here. I can take this little T, and I can put one right here, and I can put one right here. Make sure you always put the capital letter in front of the lower case letter. So now this big team for this parent can be field here, but and here and then this little t from this pant will go here and here. So when we're looking at this, we can kind of break this down a little bit. And I wont to kind of look at our Gina types first and then our FINA types. So let's look at our percentages. Remember, a pun it square shows us the probability are likelihood having an all spring with a particular gina type or peanut. Now, each time these parents have another all spring, the probability of that offspring of being a certain FINA type or genotype does not change regardless of the number of offsprings those parents have. So when we look at our Gina types, we can see that we have 25 First it big t big d we see that right here. One out of four is 25%. We can say that we have 50% big t little t and then we can say See, two out of fours, 50% and then we can say we have 25% little t little T Now remember, this is homes, I guess. Dominant big tree, Big T This one here is header rows against big T little t And this one is home is, I guess. Recessive little t little T. Now, these represent our gino types are the actual a wheels that these offsprings will have? I want you to notice that when we look at our FINA types, these numbers change a little bit. Remember fino types of what you can physically see. I can't see if a plant has, uh, to Capitol teas are just too dominant. A leal's or two recessive alleles are one dominant little one recessive lille. But I can tell that that plant is tall or short. In this case, the offspring from this parents three out of four plants are going to be tall, so it will be 75% tall, and one out of the four plants are going to be sure. Remember, the dominant trait is always expressed, so the big T will dominate the recessive little T. So my question says, What is the probability of having a short plant and your answer would be 25%? I hope this quick lesson The day is helped and I look forward to making many more. Everybody have a great day.

Genetics - High School Science

Learning at Home: High School Genetics

Take the Catapult Challenge with this fun science lesson that takes a look at the engineering process and Newton's Law.

Okay, guys, I don't know about you, but this whole quarantine has got me pretty bored. And my mind is racing had this. I did. So I came across these bad boys left over Easter egg Candies for my son and decided that I want to try the launch. These to my next door neighbor on their about 150 feet away in these eggs, fully loaded down are roughly the size of, ah, tennis ball of the weight of a tennis ball. And so I want to challenge you. Teoh. See who can build the best at home catapult with just materials that they have laying around the house. Now, when doing this, we have to remember that we we've got to be engineers. We've got to go through the engineering process. So I kind of want to walk you through that process real quick before you get started on this adventure. And by doing so, if you'll use this link right here, it will type that in your boat to get access. Teoh. Nice little thing that might guide you along through this process. So the link is https bit dot li backslash the catapult challenge I'm gonna go ahead and click it here. Should be able to see my screen. Here we go. Okay, So the engineering process now the inter name process is a lot like the scientific method in a lot of ways, you know, you always you ask yourself a question, so identify the needs and the constrict, so we know that I want o launch Easter egg Candies and I want to get them around 100 feet and they're roughly the size of our the weight of a tennis ball. So then we need to research the problem. So while doing this, I've shared a link Teoh for with you that's going to tell you about Newton's laws of motion. And you really need to get a great understanding of Newton's laws of motion before you start actually building anything because his works kind of give us the background information that we need toe truly understand why and how things are happening. Once you've researched the problem, though, once you know the why and how you think and start imagining so developed possible solutions. Look for things around your house that may actually help you with this catapult. And then plan, plan, plan, plan Select a promising solution and plan some. Or think about all the little needy, greedy details that don't need to be successful in this and building your catapult. And then here comes the fun part create. So build you a prototype, see what it can do. It doesn't have to be a full size working catapult that launches it 100 feet or shoot something that heavy. But you can build a smaller prototype. That kind of guides you through the process and see what works and what doesn't work. And then test this prototype test and test and test some or take notes record. See what observations you have, What worked? What didn't work? What could you do better? And then after you've collected all of that data from your chest, improved and redesign. So go through and see. Okay, how can I do this? Make the improvements necessary, and then guess what? Tested again. Yeah. See how well it works. See if you're improvements made it bet so. If you'll walk through this, you'll see that I've got a chart here. That kind of God's You threw these process. You're asking your researching. Developing your solutions and your plan. I even gave it a little table for you to fill everything out and then some questions to see what you've got. And once you're done and you think that you've completed this challenge, okay? And you have made the most awesome catapult share it with the world. It's a minute video of your calla Pote Pote with the following hashtag quarantine catapult challenge. And I'm really eager to see what all that we can do. I know you guys are awesome. Another your justice board as I am. So let's see some of that creativity. Come out and see what kind of catapults we have. Thanks again, You have a great day.

Learning at Home - High School Coverage

Genetics - High School Science

Engineering Process & Newton's Law - High School Science