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Biology Name: Life’s Code Objective: Browse the Genetics Science Learning Center Website to learn about basic genetics, including the structure of DNA, transcription and translation. Answer the questions as you browse through the site topics. Site Location: http://gslc.genetics.utah.edu/ Click on the link that says "The Basics and Beyond" then ---Click on the link that says "Tour the Basics" 1. What is DNA? 2. What does “DNA” stand for? 3. What is the four-letter DNA alphabet (the four bases) and what are the special rules by which the alphabet pieces bond together? What is a Gene? Hint - Look at the navigation bar at the top, you'll need to click on "What is a Gene" to continue. 4. What is a gene? 5. What are genes made of? 6. How many genes do humans have? 7. What type of molecule do genes contain the instructions for building? 8. Blood cells use a protein called to capture and carry oxygen. 9. When a gene is changed, it is said to be 10. A mutation in the hemoglobin gene causes what disorder? 11. What is a chromosome? 12. How many chromosomes does a human cell hold? A mosquito? A Carp? 13. How are the human sex chromosomes labeled? 14. How many different kinds of proteins does one cell contain? Biology Name: Life’s Code 15. Why do scientists use computer programs to model protein structure and function? 16. What provides the “blueprint” for making a protein? 17. Once in the cytoplasm, the reads the message. 18. If you stretched the DNA from a cell out, how long would it be? 19. What is heredity? 20. Why aren’t children identical to either one of their parents? 21. Every human child receives __________ of its chromosomes from his mother, and _______from his father. 22. When a sperm and egg join, they create a single cell called a 23. Does the second baby in the “What is Heredity? Animation” inherit the exact same chromosomes as the first? Do both babies have a complete set? 24. What is a trait? 25. List 3 types of traits that exist. 26. Give an example of how an environmental factor can influence a trait. 27. Scientists describe the set of information for each form of a trait as an 28. Briefly explain how the Hitchhiker’s Thumb trait is determined using the following words: allele, dominant, recessive, homozygous, heterozygous. You may draw pictures if you wish. Biology Name: Life’s Code Play the DNA Copy Game! Right now millions of your cells are copying their DNA before they divide. Your cells have high fidelity, meaning they make almost no copying mistakes. Let’s see if your conscious brain is as good as your non-thinking cells. Visit the following web site. Read all directions and do not rush to get to the game. http://nobelprize.org/medicine/educational/dna_double_helix/index.html List the nucleic acid base pairs in DNA: For each organism complete the following table, as you play each level of the game: Organism 1 (name: Number of Number of Chromosomes base pairs (millions) ) Number of different genes Number of mistakes you made Your points Organism 2 (name: Number of Number of Chromosomes base pairs (millions) ) Number of different genes Number of mistakes you made Your points Organism 3 (name: Number of Number of Chromosomes base pairs (millions) ) Number of different genes Number of mistakes you made Your points