Download Test Review Sheet - Mrs. Rasmussen Science Class

Name_________________________________________________
Period____________
Genetics Review Sheet
Parent Signature (3% extra credit on test)
I have studied this COMPLETED study guide with my student for at least 30 minutes ____________________
Inherited and Acquired Traits
1. What are traits?
2. What is the difference between an acquired trait and an inherited trait? Which is linked to genetics?
3. Identify the following as inherited or acquired:
Trait
Inherited/Acquired Trait
Flower petal length
Dancing ability
Freckles
Knowledge about math
Eye shape
Tree health
Genetics Terminology
1. Who is Gregor Mendel and what did he discover? Be specific!
2. Where is the DNA in a cell found?
3. What does DNA stand for? (Make sure you have the correct spelling!)
4. DNA is made up of how many proteins (base pairs) and what are they called?
5. What is the difference between a phenotype and a genotype?
6. How many chromosomes do you have in each cell? How many from your Mom? Dad?
.
7. What is the difference between a dominant trait and a recessive trait?
8. What type of letters represents a dominant trait? A recessive trait?
9. Define the following terms:
Homozygous:
Heterozygous:
Offspring:
Heredity:
Co-dominance:
Genotype:
Gene:
Genetics:
10. Answer the following questions based on this information:
Dominant
Recessive
Brown Eyes (B)
Blue Eyes (b)
Curly Hair (H)
Straight Hair (h)
a. If Susie has a Genotype of Bb HH, what would her Phenotype be?
b. If Bob has a Phenotype of blue eyes and straight hair, what would his Genotype be?
c. Susie and Bob are getting married. If they had four kids, how many would have Blue eyes?
Use the punnett square to determine the answer.
11. How is it possible to have a child with traits that neither of the parents have?
Asexual and Sexual Reproduction
1. What are the two main differences between asexual and sexual reproduction? (think of parents and offspring)
1.
2.
2. Fill in the table
ADVANTAGES of ASEXUAL reproduction
DISADVANTAGES of ASEXUAL reproduction
3. Fill in the table
ADVANTAGES of SEXUAL reproduction
DISADVANTAGES of SEXUAL reproduction
4. Name 4 ways that organisms reproduce asexually?
5. Let’s say an organism lived in an environment that was always changing. Would it be better for that
organism to reproduce sexually or asexually? WHY?
6. If an organism lived in an environment that changed very little, which way of reproduction would be better?
WHY?
7. State whether the following situations is an example of asexual or sexual reproduction
a. A salmon laying eggs in a river that will be fertilized by another salmon
__________
b. Taking a clipping from a plant and growing a new plant from it
__________
c. Two bacteria combining their DNA to produce a new, unique bacteria
__________
d. Taking the DNA of an organism and using it to produce a new organism
__________
Man influencing Genetics
1. What is a GMO? Give the definition
2. Why do we have GMO’s?
3. How is selective breeding different from genetic modification?
4. A tangelo is a cross between a tangerine and a grapefruit. Why do plant scientists make genetic cross like
this? Name at least three reasons.
Adaptations
1. What is a behavioral adaptation?
2. What is a structural adaptation?
3. Why do dogs grow thicker fur in the winter and shed it in the summer?
4. The bones of a bird are hollow. How is this an adaptation for the bird?
5. Describe four examples of adaptations that animals might have to make them better able to survive in their
environment.
1.
2.
3.
4.
6. Explain what a mutation is and what it has to do with adaptations.
7. What happened with the Peppered Moth story?
8. Can a single organism adapt or does it occur over time in populations? Explain…