12th grade biology mini lab project. TOPICS: DNA & GENETICS, UV RAYS.document attached,.
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Biology 1 (SCIH 025 061)
Be sure to include ALL pages of this project (including the directions and the assignment)
when you send the project to your teacher for grading. Don’t forget to put your name and I.D.
number at the top of this page!
Use Online Submission
This project contains a total possible 100 points and counts for 14% of your final course grade.
This project contains 3 parts:
Part A is explained in the following paragraphs. It is worth a possible 60 points. Save this
part of the project as SCIH02506132Project2A
Part B is your Lab Report from Lesson 9.3. It is worth a possible 20 points. Save it as
Part C is your Lab Report from Lesson 11.1. It is worth a possible 20 points. Save it as
To complete this project, and submit it electronically, you will need to download and save this
editable copy of Project 2, Part A on your computer.
*Be sure that all the parts of this project that are completed in your word processing are
saved as either .doc or .rtf for uploading.
**If you choose to submit your project by mail, see the Mail Submission instructions under
the Project Submission link on your online course access portal homepage or in the front of
your print syllabus.
(possible 60 points)
Objective: Demonstrate a complete understanding of the structure of DNA, its role, how it
accomplishes its job, how errors in the DNA happen, and what the consequences of those errors
Your job is to choose a physical trait that you exhibit or have an interest in learning more about.
Remember a ‘physical trait’ doesn’t necessarily need to have an outward appearance. An example
of this is red/green colorblindness. Explain this trait’s existence: what is the trait’s inheritance
pattern? Is it a dominant or recessive trait? Does this trait follow simple Mendelian rules of
inheritance or is it a sex-linked trait, a polygenic trait, or exhibit incomplete dominance or
codominance. Discuss whether the trait will be passed on to your child. What would be the possible
cause(s) and consequence(s) of a mutation in the gene(s) that code for this trait? This explanation
should be in one of the following forms:
a minimum 500 word essay,
a 2-3 page brochure,
a multipage, multimedia website, or
some other format that you feel adequately covers all the project requirements, and that can be
submitted using the tools available to you.
DO NOT just fill in the outline. You are expected to create a project using the outline.
Resources: should include information from your course syllabus, your text: Glencoe Biology
Chapters 10, 11, 12, and 13 (and any assignments from those chapters), technical vocabulary from
the course, and other resources that you can locate on your own (these should be listed in your
paper). The paper should be written as if to inform someone who has no knowledge of this subject.
Feel free to include drawings or illustrations to make your point.
DESCRIBE the trait (5 pts) and its heritability pattern (5 pts).
EXPLAIN the role of DNA in causing you to have this trait.
A. From where did you get the DNA?
1. Describe the production of the gametes from which you developed. You are
describing how they are produced. The naming of this process is not sufficient here.
You must describe this process. (5 pts)
2. How does the DNA copy itself so that all of your cells have the same DNA
sequences? (Hint! You may want to outline this in a step-wise manner. Don’t forget
to discuss the leading and the lagging strand). (5 pts)
3. All cells in your body do not exhibit all of the traits you have, yet they all have the
same DNA. Explain this. (5 pts)
B. HOW does the DNA cause the trait? (What does DNA tell the cell to do?)
1. Describe the process in which DNA sends the instructions out of the nucleus? Again,
you are not just naming this process and its products. (5 pts)
2. Describe the process of protein synthesis. (5 pts)
III. PREDICT whether your child will have this trait.
A. How much of your genetic material is passed on to your child? (5 pts)
B. How could you pass a trait on to your child that you do not exhibit? (5 pts)
IV. DESCRIBE the consequences of a change in your DNA.
A. What type of environmental factors cause a change in DNA and what is this change in
DNA called. In addition, please provide and explain at least 3 examples of mutation types
(not the associated disorder). (Hint! See table 12.3 for examples) (5 pts).
B. What kind of change in DNA would affect you? (Hint! Think about this on a cellular
level) (5 pts)
C. What kind of change in DNA would affect your child? (Hint! Think about this on a
cellular level) (5 pts)
Detailed instructions for submitting projects for grading can be found under the Project
Submission link on your online course access portal homepage and in the front of the print
Complete this Lab Report and save it with your course materials.
Lesson 9.3 – Blocking UV Rays
***You will submit this Lab Report as part of Project 2. It is worth a possible 20 points. See
Project 2 for further instructions.
For this lab you will need UV beads that are sensitive to ultraviolet (UV) light. They change color
when exposed to ultraviolet rays. Ultraviolet rays are a known carcinogen, and are frequently
implicated in skin cancer. Your job is to evaluate the effectiveness of various substances at blocking
20 UV beads
1 oz sunscreen (any spf)
t-shirt (or a 3×3 in. piece of t-shirt material)
watch or clock with a second hand
For each test, you will want to measure the length of time it takes for the bead to change color in full
sunlight, when protected by the substance you are testing. You will need to perform this experiment
outdoors, in full sunlight.
Use 3 or 4 UV beads for each test. For each test, hold the item directly over the beads to screen it
from the Sun, in such a way that you can view the bead from the bottom to observe any color
change. For the t-shirt test, use only one thickness. For the water, you can immerse the beads in a
cup of water.
You should save the sunscreen test until last, because the sunscreen may be difficult to wash off of
the beads. You may want to try more than one strength (spf) of sunscreen. Feel free to add rows to
the data table for different spf’s of sunscreen if you use them.
Before you begin, answer question 1. Then, collect and record your data in the following chart and
answer question 2.
1. Which substance do you think will be most effective at blocking UV rays and why? (5 pts)
Data table (10 pts)
Material being tested
Time in seconds for bead to change
Sunscreen SPF _____
UV Beads without protection
2. Based on your data which substance was most effective at blocking UV rays? (2 pts) Provide a
scientific explanation as to why this substance was the most effective at blocking UV rays. (3 pts)
You may need to do some online research to answer this question.
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