Unit 12 - Genetics

Previously we studied how DNA and RNA work together to synthesize proteins from a genetic code kept by DNA. Ultimately the codes for proteins translate into the individual traits inherited and express by living organisms. In this unit we will study how these genetic traits are inherited or passed on from one generation to the next. We will also examine mutations(mistakes) that occur in the hereditary process. Finally, we will look at the ways man can manipulate and modify heredity through biotechnology.

Specific Assignments:

SB2: Students will analyze how biological traits are passed on to successive generations.
SB2e: Examine the use of DNA technology in forensics, medicine, and agriculture.

Assignment 1:
Study the following lessons on the Learn Genetics website to find and write down definitions for the vocabulary terms on the Genetics vocabulary helpsheet ((see helpsheet). To complete the lessons, first access the Learn Genetics website using the link below. Next, click on"Tour of the Basics" and then click on the appropriate tab for each lesson at the top of the page. Click here to access the web site.

Lesson 1: What is a gene?
Lesson 2: What is a chromosome?
Lesson 3: What is heredity?
Lesson 4: What is a trait


Assignement 2: Genetics in a Nutshell -- mini-lecture. Take notes and participate in class discussion. Continue to complete Genetics helpsheet as you go.

Review what you have learned about basic genetics by watching the following video.



Quiz: Basic Genetics -- Chromosomes, genes, and alleles

Assignment 3: Complete the Punnett Square worksheet. Be prepared to discuss your results with your teacher on an individual basis (i.e. one on one). (click here to see worksheet)

Here is a great video that summarizes how to use a Punnett Square.

Assignment 4: Sex Chromosomes -- mini-lecture. Take notes. Participate in class discussion.

Assignment 5: Mutations and Genetic Disorders-- mini-lecture. Again, take notes. Complete the Chromosomal Mutations exercise (see handout). Then, as a class, we will peruse the Genetic Disorders Library by clicking here.

Review what you have learned about mutations by watching the following short videos entitled "Point Mutations," "Duplication and Deletion," and "Translocation and Inversion."







Extra Credit: Genetic Disorder report. Prepare a very short report on a genetic disorder. Choose the disorder from the Genetic Disorders Library through the link given above. Read about the disorder and report the following information:

• The name of the disorder (or disease)
• What type of gene mutation or chromosome abnormality causes the disorder
• What are the symptoms of the disorder
• How is it treated (if at all)

You do not have to write a formal report. Just take notes and share with the class what you learned about the disorder.

Assignment 6: Exploring Biotechnology -- mini-lecture. Take notes and participate in class discussion introducing various aspects of biotechnology such as cloning, genetic engineering, stem cell research, and DNA fingerprinting. If time permits, make a virtual DNA fingerprint (class activity) . Click here to start lab.

Assignment 7: Review for the unit test.
First, watch the short video below. DO NOT TAKE NOTES. Just watch closely. It's a good review of all we have learned up to this point. Watch it as many times as needed.



Next, look over the genetics helpsheet. Make sure you understand each term. If you don't, ask your teacher or a classmate for help. (Helpful hint: Remember, flash cards will help you learn faster and cut down on study time)

Unit TEST: Genetics