Genetics 101: Basic Inheritance
Name______________________________
Web Quest- http://bonnemjonesgenetics.weebly.com/
Watch each video in order and complete the study guide.
Part I: What Are Genes?
1. Where are genes found? _______________________ and _______________________________
2. A human has approximately how many genes? ________________________________________
3. How many feet of DNA must fit into the nucleus of each cell? _____________________________
a.) How does that much DNA fit into the nucleus? ___________________________________
____________________________________________________________________________
4. DNA is a recipe for _______________________________________________________________
5. What do gene regulators do? _______________________________________________________
6. How many chromosomes do humans have? ____________ Organized into _____________pairs.
7. How many pairs of chromosomes are found in each of the following organisms below?
Chimp
Rhesus Monkey
Cow
Chicken
Fruit Fly
Banana
Chicken
Fruit Fly
Banana
8. What percent of your DNA do you share with:
Chimp
Rhesus Monkey
Cow
Genetics 101: Basic Inheritance
Name______________________________
Web Quest- http://bonnemjonesgenetics.weebly.com/
Part II: What are SNPs?
1. What is a genome? _______________________________________________________________
2. The human genome has how many base pairs? ________________________________________
3. What is a SNP? __________________________________________________________________
4. What does SNP stand for ____________ ____________________ ________________________
5. Mistakes copying DNA can occur at individual bases. List the 3 things that can happen to a base:
a._____________________________
b. ____________________________
c._____________________________
6. How many SNPs are found in the human genome? ______________________________________
7. SNPs account for these differences between individuals:
a.__________________________________
b.__________________________________
c.__________________________________
d.__________________________________
8. You can tell how related you may be to a neighbor because ______________________________
Genetics 101: Basic Inheritance
Name______________________________
Web Quest- http://bonnemjonesgenetics.weebly.com/
Part III: Where Do Your Genes Come From?
1. You have 2 sets of each of the 23 chromosomes. Where do they come from? ________________
__________________________________________________________________________________
2. Homologous Chromosomes:
What do homologous chromosomes have
in common?
How do homologous chromosomes differ?
3. The X and y chromosomes determine what trait about an individual? _______________________
4. A female is __________________________ and a male is _______________________________
5. A mother can only donate a ________________________gene, while the father can donate a
___________________ or ____________________gene.
6. Adult cells versus sex cells
Type of cell
Adult Cells
Sex Cells –eggs or sperm
# of sets of
chromosomes
Total # of
chromosomes
7. What determines which member of the homologous pair goes into an egg? _________________
_________________________________________________________________________________
8. Why are you different than your siblings?_____________________________________________
__________________________________________________________________________________
Genetics 101: Basic Inheritance
Name______________________________
Web Quest- http://bonnemjonesgenetics.weebly.com/
Part III: Where Do Your Genes Come From? CONTINUED!!!
9. When making eggs or sperm, how is each chromosome sorted? ___________________________
10. What happens during “crossing over?” _______________________________________________
11. What is genetic recombination? ____________________________________________________
12. What are the two types of genetic information used to trace relatives?
a._________________________________Why? _____________________________________
____________________________________________________________________________
b. ________________________________Why?______________________________________
____________________________________________________________________________
Part IV: What Are Phenotypes?
1. What is a phenotype? ______________________________________________________________
2. A phenotype is the result of ____________________ + __________________________________
3. Genes versus Environment- Comparing Traits
√- If Determined
Trait
Mostly By Genes
Height
Weight
Personality
√- If Determined
Mostly By
Environment
Factor That Can
Influence Trait
Genetics 101: Basic Inheritance
Name______________________________
Web Quest- http://bonnemjonesgenetics.weebly.com/
DNA Packaging
1. Explain the steps involved in packaging DNA into chromosomes. You may use
diagrams to clarify your explanation.