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BIOLOGY 1
STANDARD 4.0
LESSON 4.5A
PRINT OUT THIS LESSON BEFORE CONTINUING IN ORDER TO
FOLLOW THE DIRECTIONS AND COMPLETE THE ASSIGNMENT.
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Genetics and Biotechnology Unit
The student will investigate the concepts of genetics and
heredity, different methods of reproduction, patterns of
inheritance, and genetic disorders; as well as, explore and
evaluate the DNA technologies from both a scientific and
ethical perspective.
Lesson 2a- Structure and function of DNA
Site Location: Basic Genetics overview
Familiarize yourself with the homepage of this site. The main page features 2 feature
articles.
1. What are the titles of the two feature articles on the main page?
Click on the link that says "The Basics and Beyond" then
click on the link that says, "Tour the Basics" then after the next page opens...
Click on the link that says, "Tour the Basics". A new window will open, you can
navigate sections by using the top toolbar.
Click next under the Man’s head to proceed through the lesson_____
What is DNA?
2. What does DNA stand for?
3. Why is DNA called a blueprint?
4. The "twisted ladder" shape of the DNA molecule is called a ___________
______________
5. Name the four bases found in a DNA molecule.
6. A DNA strand is made of _______________ which make up _______________
which make up sentences.
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.
7. What is a gene?
8. What happens if a gene is mutated?
What is a Chromosome?
9. If our cells were as large as an aspirin, how long would the DNA be?
10. How many chromosomes does a mosquito have? _______ an onion? _______ a
carp? _______________
What is inheritance?
11. Why aren't children identical to their parents?
12. From each parent, how many different possible combinations are there?
What is a protein?
13. How is a protein like a car engine?
14. What do "structural proteins" do?
15. Where do proteins come from?
16. Genes are read from the DNA and produce a molecular message in the form of
_______
17. Once in the cytoplasm, the _______________ reads the message.
18. What happens once the protein is made?
What is Mitosis and Meiosis
19. Why do we need haploid cells?
20. What is the difference between mitosis and meiosis?
Close the window and return to "Basics and Beyond"
Click on "Build a DNA Molecule"
"Build a DNA Molecule"
21. Build and draw a DNA molecule. What is the base pair rule?