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Name: __________________________________________________ Date:__________ WEBQUEST Learn Genetics http://learn.genetics.utah.edu/ TOUR OF THE BASICS Click on “What is DNA” in upper left hand corner of the web page. Listen & read. Click, “Next” on bottom right. Answer question: The instructions for all the necessary information for a living organism to grow and live can be found where? ______________________________________________________________ Click, “Next” on bottom right. Answer questions: These instructions come in the form of what? ___________________________ What does the author mean when he refers to DNA as ‘plans’ or ‘blueprints’ for building different parts of cells? ______________________________________________________________ ______________________________________________________________ What does DNA stand for? _________________________________________ Click, “Next” on bottom right. Answer questions: The DNA molecule comes in a ‘twisted ladder’ shape scientists refer to as a ______________________________________________________________ Look at the DNA Model. Make note of the main parts of the DNA double-helix model. Locate the sugar phosphate backbone and the “alphabet letter” base pairs connected by hydrogen bonds. These four letters represent the nitrogenous bases connected by hydrogen bonds on opposite complementary DNA strands. A stands for nitrogenous base, adenine; T stands for the nitrogenous base, thymine; G stands for the nitrogenous base, guanine and C stands for the nitrogenous base, cytosine. These bases are paired together according to special rules. If A always pairs with T and C always pairs with G, what would the matching base pair for the complementary strand for the following DNA sequence? Name: __________________________________________________ Date:__________ A - ____ G - ____ T - ____ C - ____ G - ____ A - ____ C - ____ T - ____ Click, “Next” on bottom right. Answer question: The DNA strand is made of these bases in specific sequences. These sequences make words (the language of DNA) and these words make sentences. What do the DNA base letters A, T, C and G stand for? A - _________________ C - _________________ T - _________________ G - _________________ Now click on “What is a Gene” in the upper left of the web page. Answer the following question. What is a gene? ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ Click, “Next” on bottom right. Answer question: How do genes help make and operate all parts of our bodies? ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ SCIENCE FACT: The Human Genome Project is an international scientific research project with a primary goal of determining, identifying and mapping the sequence of all the base pairs of DNA in the human genome. A genome contains all of the biological information needed to build and maintain that organism. The human DNA is made up of approximately 20,000–25,000 genes. The project began in 1990 and a working draft of the genome was released in 2000 and a complete one in 2003, with further, more detailed analysis still being published. of definitively locating the gene on a chromosome.) (*Gene mapping refers to one of two different ways Name: __________________________________________________ Date:__________ Click, “Next” on bottom right. Answer question: About how many genes contain the instructions for making the blood protein hemoglobin. ______________________________________________________________ Click, “Next” on bottom right. Click, “Next”, again and answer question: If our hemoglobin gene is “mutated” what is a possible disorder that can result from this faulty instruction? ________________________________________ Click, “Next”, again and answer question: What are examples of some other “things” gene provide the instructions for? ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ Click on “What is a Chromosome” in upper part of the web page. What is a chromosome? ____________________________________________ Click, “Next” on bottom right. List the steps involved in packaging DNA into compact chromosomes: 1. ____________________________________________________________ 2. ___________________________________________________________ Click, “Next”. Chromosomes are efficient storage units for DNA. True or false? ____________ Click, “Next”, again. Answer question. How many chromosomes does one human cell hold? ________________________ Click, “Next”, again. Answer questions. How many ‘sex’ chromosomes do humans have? ___________________________ What are YOUR ‘sex chromosomes? XX or XY Name: __________________________________________________ Date:__________ Click, “Next”. Now click on “What is a Protein” in upper part of the web page. Answer question. How do proteins work in the body? ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ Click, “Next”. Click, “Next”, again. Click, “Next”, again. Answer questions. What are “receptor proteins”? ______________________________________________________________ ______________________________________________________________ Click, “Next”. Answer questions. What are “structural proteins”? ______________________________________________________________ ______________________________________________________________ Click, “Next”. Click, “Next”, again. Click, “Next”, again. Answer questions. What is RNA? ___________________________________________________ ______________________________________________________________ Where are the protein produced and what organelle is responsible for its production? ______________________________________________________________ ______________________________________________________________ Click, “Next”. Click, “Next”. Click on “What is Heredity” on the upper right of the web page. Answer question. What is heredity? ______________________________________________________________ ______________________________________________________________ Name: __________________________________________________ Date:__________ Click, “Next”, again. Answer question. Where are our ‘traits’ located? ______________________________________________________________ ______________________________________________________________ Click, “Next”. Answer questions. How do parents pass genes to their children? ______________________________________________________________ ______________________________________________________________ Click, “Next”, again. Answer questions. How many sets of chromosomes do the sperm and egg contain? _______________ When they join, they create a “zygote”, which contains how many chromosomes? _____________ Click, “Next”. Click, “Next”, again. Answer question. How many chromosomes does each parent contribute to their baby?___________ Click, “Next”. Click “Next”, again. Answer question. Why does every child from the same set of parents look slightly, if not completely different? ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ Click, “Next”. How are traits passed from generation to generation? ______________________________________________________________ ______________________________________________________________ Click on “What is a Trait” in upper left hand part of the web page. Answer questions. Name: __________________________________________________ Date:__________ What is a trait? ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ Click, “Next”. What is an example of a physical trait? ______________________________________________________________ ______________________________________________________________ What is an example of a behavioral trait? ______________________________________________________________ ______________________________________________________________ Click “Next”, again. Answer question. What is a medical condition that can be passed from parents to child? ______________________________________________________________ Click “Next”. Click “Next”. Click “Next”. Click “Next”, again. Answer question. What are some examples of traits that may have been changed through environmental factors? ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ *If you need to, click “Previous” at anytime to go back. Click “Next”, again. Answer question. Our traits are determined by the set of genetic information found in our chromosomes. Remember, you have two sets (one from Mom and one from Dad). What is the scientific name for the part of our chromosomes that has the information for each trait? _________________________________________ Click “Next”. Answer questions. Name: __________________________________________________ Date:__________ What combination of “H” alleles represents the trait for a straight thumb? _______________ What kind of thumb do you have? ____________________________________ Click “Next”. Answer question. What does “homozygous” mean? ______________________________________________________________ ______________________________________________________________ Click “Next”. Click “Next”. Click “Next”, again. Answer questions. What is a ‘dominant’ trait? ______________________________________________________________ ______________________________________________________________ What is a ‘recessive’ trait? ______________________________________________________________ ______________________________________________________________ What does it mean to be ‘heterozygous’ for a trait? ______________________________________________________________ ______________________________________________________________ Click “Next”. Click “Next”, again. Click “Next”. Click “Next”, again. Click “Next”. Click “Next”, again. Click “Next”. Finally, click next one more time. Answer questions. What trait did you inherit from your mother? ______________________________________________________________ What trait did you inherit from your father? ______________________________________________________________ DONE!!
