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Inheritance * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does The Mr Men Match. * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does Meet our Mr Men And our Little Misses Now lets meet their children! * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does Who do you think are his parents? Write the answers in your book. * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does Who do you think are her parents? Write the answers in your book. * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does Who do you think are his parents? Write the answers in your book. * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does Who do you think are his parents? Write the answers in your book. * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does Who do you think are her parents? Write the answers in your book. * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does Who do you think are her parents? Write the answers in your book. * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does What did we learn from this? • Children inherit features from their parents • If two parents have a certain characteristic then their child may show it even more (e.g. Mr Small + Little Miss Tiny = Mr Very Small!) • Some things such as glasses, scars and muscles we get from our environment, they are not inherited. * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does Genetic information • The instructions that make up a plant or animal comes from their parents. • ½ comes from the sperm and ½ from the egg • These instructions are found in the nucleus of the cells. • The instructions for each characteristic are called GENES. * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does We saw that when Mr Small and Little Miss Tiny produced a child it was even smaller. What would happen if Mr Very Small had a child with Little Miss Miniscule?? * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does This is called selective breeding and can be used to make larger animals and crops that produce more fruit Large fruited Dad Large fruited Mum Very large fruited child! * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does Lets see what you’ve learned: Farmer Hemming wants to breed cows that are large and meaty so that he can sell them for more. 1. What advice would you give him in order to produce larger cows? 2. He can’t seem to breed cows with nose rings! Why not? 3. How many chromosomes are in your cells? * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does Where is this information kept? • Extracting DNA * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does DNA models • Cut out spines A and B. • Cut out the rungs. • Fold down the tabs so that they are at right angles to the rungs (as shown in the picture). • Put glue on one tab of each rung and stick them onto spine A in the numbered boxes. You can attach the rungs in any order (pointing either way). Wait for the glue to set before proceeding. You may also want to hold the rung on with a paper clip or clothes peg so it sticks well. • Once the glue is dry, put glue on the other tab of each rung and stick them to the corresponding numbered position on spine B. This is the tricky part because you'll have to support both spines while the glue is drying. Once again, this is where pegs will be a BIG help. • When you've completed your model, hang it from the ceiling. To complete the presentation of your molecule, cut out the Double Helix label that appears with the rungs and hang it from the bottom of the double helix. * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does DNA (or deoxyribose nucleic acid) is a long molecule made of twostrands twisted together. This forms a structure known as a double helix. * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does A karyotype is a picture showing all the chromosomes in a cell. * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does Chromosomes contain thousands of genes. Each gene controls a different characteristic. Genes come in pairs, one from your mother and one from your father. Some characteristics are controlled by just one pair of genes. Most characteristics are the result of different genes working together. * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does * ** *** State that we can inherit characteristics from our parents State what is meant by a gene Describe what a gene does