Download Genetics Unit Pre-Test HW-66

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HW-66
Biologist’s Name: _________________________________ Class: 8__ Date: ____________
Mrs. Bouchard – 8th Grade Science
Genetics Unit Pre-Test
DIRECTIONS: Answer each question below to the best of your ability.
Many (or all) of the questions will not be familiar – that’s fine! Do the best you can!
Next to each question, use the check boxes to tell me if the material looks familiar to you.
Finally, when you are done, complete the answer key at the back!
1. The male sex cell is the __________, whereas the female sex cell is the __________.
A. recessive, dominant
B. chromosome, gene
C. egg, sperm
D. sperm, egg
I know this!
I think I know this,
but I’m not sure.
I have NO idea.
2. Which is an advantage of sexual reproduction over asexual reproduction?
A. Sexual reproduction produces more offspring
B. Sexual reproduction is quicker and less complex
C. Sexual reproduction produces more diversity
D. Sexual reproduction never produces genetic defects.
I know this!
I think I know this,
but I’m not sure.
I have NO idea.
3. A gene or trait that appears or expresses itself over a recessive trait is called a/an
A. influential gene.
B. chromosome
C. dominant gene.
D. mutation
I know this!
I think I know this,
but I’m not sure.
I have NO idea.
4. Hunter found some termites in a wooden board sitting in his backyard, so he sprayed some
insecticide on the board to kill the termites. Hunter noticed that about 95% of the termites died,
but 5% survived. What is the most likely explanation for this?
I know this!
A. The living termites were a different species than the dead termites
I think I know this,
B. The living termites had genes that the dead termites did not have.
but I’m not sure.
C. The living termites were males and the dead termites were females
D. The living termites knew that Hunter was going to spray the insecticide, I have NO idea.
so they camouflaged themselves.
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5. In sexual reproduction, an offspring is produced with genes from both parents. When the
offspring has a new genetic variation that it got from neither of its parents, it is called a/an
A. mutation
B. recessive gene.
C. Dominant gene
D. phenotype
I know this!
I think I know this,
but I’m not sure.
I have NO idea.
6. Which of the following are threadlike linear strands of DNA and proteins that carry the genes
and functions in the transmission of hereditary information for living organisms?
A.
B.
C.
D.
chlorophyll
chromosomes
cells
mutations
I know this!
I think I know this,
but I’m not sure.
I have NO idea.
7. Both of Tim's parents have brown eyes, but Tim has blue eyes. How is this possible?
A. This characteristic (blue eyes) must be carried in the dominant gene
B. Eye color is not a genetic trait.
C. The characteristic (blue eyes) is carried in a recessive gene.
D. all of these
I know this!
I think I know this,
but I’m not sure.
I have NO idea.
8. Single celled organisms can reproduce and create cells exactly like themselves without
combining genes from two different parent cells. When they do this, they use a type of
A.
B.
C.
D.
asexual reproduction
gamete formation
natural selection
sexual reproduction
I know this!
I think I know this,
but I’m not sure.
I have NO idea.
9. A group of moths lived in a forest. Some of the moths were blue and other moths were yellow.
Vines started growing in the forest. In the spring, the vines were covered in many yellow flowers.
Due to this, animals that ate moths had a hard time seeing the yellow moths, but the blue moths
became easier to see.
I know this!
What might happen to the moths in the forest?
I think I know this,
A. The blue moths will grow in numbers to make up for all the other
but I’m not sure.
blue moths that were eaten.
I have NO idea.
B. The blue moths will turn into yellow moths so that they also cannot be
seen.
C. The blue and the yellow moths will continue to live in the forest as before.
D. The blue moths will become extinct, and the yellow moths will survive and
have yellow moth offspring.
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ANSWER SHEET:
When you are done, write your answer for all 9 questions next to the correct question number below.
Also write “K” for “Know This,” “T” for “Think I Know” or “N” for “No Idea.”
Question
Number
Example
Answer
B
Do I
Know
This?
K
1
2
3
4
5
6
7
8
9