Name: _________________________________________________________________ Date: ______________
Mendelian Genetics WebQuest
http://www2.edc.org/weblabs/weblabdirectory1.html  click on “Mendel’s Peas,” 
click on “Enter Web Lab.” Once in the lab, follow the directions for moving through
Mendel’s experiments.
**NOTE – if you use the “back” button on the browser, it will take you back to the original start page, where
you have to click on “enter web lab.” Make sure you have answered all relevant questions before moving on
as you’ll have to redo much of your work to get back to where you were when you pressed the “back” button.**
1. When and where did Mendel live? ____________________________________________
2. What did Mendel study? ____________________________________________________
______________________________________________________________________________
3. Why did Mendel study pea plants?
a.
b.
4. How many traits are visible in pea plants? ________________
5. List them in the space below (make sure to include both options for each trait):
6. What were the traits of the pea plants for 2 of the 5 crosses you completed?
Traits
Pea Shape
Pea Color
Pod Shape
Pod Color
Flower Color
Plant Size
Flower Position
Cross 1
Parent 1
Parent 2
Cross 2
Parent 1
Parent 2
Name: _________________________________________________________________ Date: ______________
7. For the 2 crosses you identified above, indicate the flower color, plant size and pea
color for each of the 5 offspring produced from each cross in the table below.
Cross 1
Traits
Offspring
Offspring
Offspring
Offspring
Offspring
1
2
3
4
5
Flower
Color
Plant Size
Pea Color
Traits
Offspring
1
Offspring
2
Cross 2
Offspring
3
Offspring
4
Offspring
5
Flower
Color
Plant Size
Pea Color
8. Are there some traits that get hidden from one generation to the next? ____________
9. When you cross one plant with itself, are its offspring always identical to itself? _____
10. Do purple flowers always produce all purple flowers? __________________________
11. Do white flowers always produce all white flowers? ____________________________
12. After following “Mendel’s” directions for the self-fertilization of the two plants, what
did you learn about the peas?
______________________________________________________________________________
______________________________________________________________________________
13. What are dominant traits? __________________________________________________
______________________________________________________________________________
14. What are recessive traits? ___________________________________________________
______________________________________________________________________________
Name: _________________________________________________________________ Date: ______________
15. Which flower color is dominant (circle one)? PURPLE or WHITE
16. Which characteristics are dominant and which are recessive? Fill in the table below
by writing in the correct characteristic under each heading.
Traits
Pea Shape
Pea Color
Pod Shape
Pod Color
Flower Color
Plant Size
Flower Position
Dominant
Recessive
Once you have correctly identified all the characteristics that are dominant, chose the
“exit” button. Then, go back to the original web lab directory (first link) and click on the
“Punnett Squares” Link
17. What are Punnett Squares used for? __________________________________________
18. What do the letters in the boxes tell us about the offspring of the chickens? ________
______________________________________________________________________________
19. How often do we expect that brown chickens will be produced as a result of the
cross presented in the lab? _________________________________________________
20. Write in the correctly completed Punnett Square for the lemmings.
A
a
A
a
21. How many lemmings will be heterozygous or carriers for the albinism trait, out of
four offspring? ___________________
22. What combination of lemmings from the first cross will give you the best possibility
for producing albino lemmings? __________x____________ (write their genes here).
23. How many tries did it take you to produce the long-tailed, albino lemming? ______