Name __________________________________________________Due Date________________________ Period_____________

5.2 Introduction to Mendelian GeneticsDirections: Go to: http://learn.genetics. utah.edu/content/basics/oldtour/ click on the tour for each section and answer the corresponding questions.

Part A: What is Heredity?1. What is heredity?

2. Where are our genes found? What are they made of?

3. Are genes the only things that determine our traits? Explain/give an example.

4. How many total chromosomes do humans have? How many chromosomes do you get from each of your parents?

5. Why do you have a unique set of traits (why do you look different from your siblings)?

Part B: What is a Trait?1. Give 2 examples of YOUR physical traits.

2. Give an example of one of YOUR behavioral traits.

3. Give an example of a medical condition that can be inherited.

4. The 2 factors that determine our traits are __________________ and ___________________.

5. Each form of a gene is called an ______________. Each of us has _______ alleles for each trait.

6. ________________________ means having 2 of the same alleles for a trait.

7. _______________________ means having 2 different alleles for a trait.

8. Explain, based on what you’ve learned about alleles, how sisters can have different eye colors.

9. What percentage of your DNA is the same as everyone else on the planet?

Part C: What is DNA

1. Where are all the instructions for living organisms (DNA) found in a cell?

2. What does DNA stand for?

3. T always pairs with _____ and G always pairs with _____.

4. What do genes tell a cell to make?

Name __________________________________________________Due Date________________________ Period_____________

Part D: What is a Gene

1. Genes are instructions for making _______________.

2. Genes are made of _____________.

3. One chromosome (strand of DNA) has _______________ genes.

4. Humans have approximately how many genes?

5. A change in the genetic code is called a _________________.

Part E: What is a Protein1. Make an analogy: How are proteins like a car engine?

2. Approximately how many different types of proteins are there?

3. How many proteins does one gene make?

4. What is the name of the process that makes an RNA copy of a gene in the nucleus?

5. What is the name of the process in which a ribosome reads the RNA message and makes a protein?