Download Genetics WebQuest

Genetics WebQuest
Name:
Date: ___________ Due:_________
Website: http://library.thinkquest.org/C004367/be1.shtml
Scroll down the page to the introduction section to begin.
Key Vocabulary
 Allele:
Do not copy exact definitions, simplify and make your own!
 Chromosome:
 DNA:
 Dominant:
 Gene:
 Genotype:
 Heterozygous:
 Homozygous:
 Phenotype:
 Recessive:
Blending Theory of Inheritance
1. What was the “blending” theory of inheritance?
2. What example did they use to describe this theory? Hint: Parents will have this type of kid
3. Why were there problems with the blending theory? What couldn’t it explain?
Mendel’s Experiment
4. Who is credited with finding the blending theory? What plant species did he use?
5. What was Mendel's Principle of Segregation:
6. What was Mendel's Principle of Independent Assortment
Mendel’s Observations
7. What characteristics of pea plants did Mendel study?
8. Explain Mendel’s results below and draw a sketch of them using the image provided. If a
tall plant and a short plant are crossed, what height did the generation 1 show? Continue this on
up to generation 3.
Generation 1
Generation 2
Generation 3
Punnett Square Simulation
9. Perform the following shown below in the punnett square simulation. Be sure to insert the
missing alleles in the table.
T
t
T
t
T
T
T
T
T
t
T
t
t
t
t
t
Co-dominance/Incomplete dominance
10. Explain what happened with the 4 o’clock flowers when a white and a red are crossed.
11. What happens when the pink flowers self-fertilize?
12. How many blood types are there?
13. Which 4 do we commonly associate with?
Sex-Linked Traits
14. What are sex-linked traits?
Limitations of the Mendelian System
15. What is one of the limitations of the Mendel blending theory in explaining human traits?