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Genetics - Form V - Inheritance of Two Traits Note this is the largest module of this assignment. It has over 20 blanks.

When you click Submit (at the bottom of this web page) it will save your work on the server for me.

DO NOT Click submit more than once!

TAB OR USE THE MOUSE Between the fields....

You are encouraged to work in small groups (pairs or threes). You will only have to submit one paper per group (with all the names!)

In the computer log on as “River” password: “Deep” in the Domain “this computer”

You will want to keep this window open while you work on Riverdeep. To do this you should open Riverdeep in a new window.

Click on “Start” then “Programs” then “Riverdeep Logal Express” then “Riverdeep Logal Express”

Click on “High School Science Gateways” then “Biology” then “Principles of Genetics”

Start with “Inheritance of Two Traits” and read and do everything on the site. However while you need to fill in the tables on the site to figure things out, you do not have to answer the questions in the boxes on the site. Below you will find boxes with some of their questions, and some of my own. You will be graded on these answers.

Answer the questions as best you can. The boxes will expand as you type if you need more space. (Don't worry if it is a one word answer. The box size is standard.)

Name:

Class Period

1 2 3 4 5 6 7

Question 1:  What are the two traits in pea plants the simulation is working with? 

Question 2: What does dihybrid mean?

Question 3: What is the genotype of a white flowered plant?

Question 4: What is the genotype of a short plant?

Question 5: Why can’t you answer the question ”What is the genotype of a purple flowered plant?”

Remember, the boxes will expand as you type if you need more space.

Question 6: What is the genotype for a homozygous tall, homozygous purple flowered plant?

Question 7: What is the genotype for a short, white flowered plant?

Question 8: What is the genotype of all of the F1 offspring (page 7 of 21)?

Question 9: What is the most common phenotype on page 9 of 21?

Question 10: Fill in the table on page 10 of 21 (do the 5 trials). What are the ratios you get in the table on page 11?

Remember, the boxes will expand as you type if you need more space.

Question 11: On page 13 of 21 you calculate "better" ratios (more data). What are they?

Question 12: Where in meiosis does something happen which explains the law of independent assortment?

Question 13-21:  Fill in the F2 Dihybrid cross below. For each square also list its phenotype. I've done 7 of the 16 boxes.

  AB Ab aB ab
AB AABB; tall, purple flowers 13 AaBB; tall, purple flowers 14
Ab 15 AAbb; tall, white flowers 16 17
aB 18 19 aaBB; short, purple flowers aaBb; short; purple flowers
ab AaBb; tall; purple flowers Aabb; Tall, white flowers 20 21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Question 22: Fill in the table on page 16 of 21. How many different phenotypes are there?

Question 23: What is the law of independent assortment?

      

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