Biology 1 Genetics Web Activities

NAME: ______DATE: ______

Biology 1 Genetics Web Activities

Part 1 Directions:

· Open Internet Explorer and copy/paste (or control-click) the following link to navigate to the Mendel’s Peas Web Lab site.

· http://biologica.concord.org/webtest1/web_labs_mendels_peas.htm

· Follow the directions in the display box, and answer all the questions in this packet as you go through the animations and the final game.

1. What are the 8 different genes/traits that are being examined in this activity?

a. ______

b. ______

c. ______

d. ______

e. ______

f. ______

g. ______

h. ______

2. What are the different alleles for each of these genes? (You can find these by holding your cursor over the pictures of the “parent” plants in the top portion of the display.)

a. ______

b. ______

c. ______

d. ______

e. ______

f. ______

g. ______

h. ______

3. Click “Next.” Play the meiosis animation for both plants pictured. What happens to the chromosomes before the first division? What does the first division do? What does the second division do? (You can replay the animations by clicking on the “rewind” arrow and then clicking “play” again.)

4. What do you notice about all of the gametes from the plant on the left?

5. What do you notice about all of the gametes from the plant on the right?

6. Select one gamete from each parent and run the fertilization animation to produce a new individual. What do you notice about the offspring you produce from these parents?

7. Run the meiosis animations for each parent again, choose gametes from each parent and run the fertilization animation again. What do you notice about the second offspring you produce from these same parents? How can you explain this observation?

8. Click “Next.” Pedigrees: F1 refers to the first (1st) Filial or offspring (F) generation. After you click on the two F1 plants, click on the word cross to see the results. You can change the trait you are viewing on the pedigree chart by choosing a different trait from the pull down menu in the top left corner of the display box. What do you notice about this new F2 generation of plants? Explain how this is possible.

9. Proceed to the game by clicking next. Can you produce enough wrinkled peas to win the game? What did you have to do to accomplish this? If you did not succeed, try again until you do.

Part 2 Directions:

· Open Internet Explorer and copy/paste (or control-click) the following link to navigate to the Drag-and-Drop Pedigree Genetics web site.

· http://www.zerobio.com/drag_gr11/pedigree/pedigree_overview.htm

· Complete all four Pedigree Problems and the final quiz, recording all your results in the appropriate locations in this packet.

Gameplay Tips:

· Drag the images representing males, females and genotypes into position on the pedigree tree. Left-click on an image and hold to drag it.

· Use the "Check Pedigree" and "Check Answer" buttons only AFTER you have attempted to solve the problem and built the pedigree. The first two genetic problems allow you to see the correct pedigree but for the last two problems you are on your own. Good luck!

· For entering percent answers, do not include the percent sign or any spaces, just the numbers (ie.75).

· For entering word answers, use all small letters (ie. yes).

· For entering crosses, use capital and small letters for dominant and recessive genes and leave a space before and after the "x" sign. You can use a "dash" for unknown genes (ie. T- x Tt).

· For entering blood types, use capital letters for dominant genes and include the "I" (ie. IBIB and IAIB). Note the small letter "i" for the recessive gene (ie. IAi and ii). Do not use the word "Type" in your answer and don't worry about superscripts.

· Works best with Internet Explorer with 1024 x 768 (or larger) screen size.

First Pedigree Problem:

Tongue Rolling:

1. Drag and drop the square/circle shapes to form the correct pedigree using the information given. Remember that squares represent males and circles represent females. Shaded shapes are affected and half shaded are carriers.

2. After arranging shapes in the pedigree, drag and drop the genotype labels (RR, Rr, rr) to place the correct one under each individual in the pedigree.

3. Drag and drop the generation labels to the appropriate locations.

4. Check your pedigree, make any necessary corrections, and sketch it below.

5. Answer the questions at the bottom of the web page and check your answers. Fill in the correct answers below:

1. What percent of the offspring are homozygous non-rollers? ______

2. What percent of the offspring are heterozygous rollers? ______

3. Can the parents produce a homozygous dominant child? ______

4. How could the cross for the parents (father x mother) be written using the “dash” technique for unknown genes? ______

Second Pedigree Problem:

Eye Color:

2. After arranging shapes in the pedigree, drag and drop the genotype labels (EE, Ee, ee) to place the correct one under each individual in the pedigree.

3. Drag and drop the generation labels to the appropriate locations.

4. Check your pedigree, make any necessary corrections, and sketch it below.

5. Answer the questions at the bottom of the web page and check your answers. Fill in the correct answers below:

1. Write the cross for the parents (father x mother). ______

2. Is the mother homozygous or heterozygous? ______

3. What percent of the children are homozygous recessives? ______

4. If one son gets married and all his children have brown eyes, what must the genotype of his wife be? ______

5. How could the cross for the parents (father x mother) be written using the “dash” technique for unknown genes? ______

Third Pedigree Problem:

Diabetes:

2. After arranging shapes in the pedigree, drag and drop the genotype labels (DD, Dd, dd) to place the correct one under each individual in the pedigree.

3. Drag and drop the generation labels to the appropriate locations.

4. Sketch your pedigree below.

5. Answer the questions at the bottom of the web page and check your answers. Fill in the correct answers below:

1. Can the parents in generation 1 produce a child with diabetes? ______

2. How many individuals in the entire generation 2 suffer from diabetes (1, 2, 3, or 4)? ______

3. If you only knew that the girl in generation 3 didn’t suffer from diabetes, what is the best way to write her genotype? ______

4. What genotype must the boys in generation 3 marry so their children do not suffer from diabetes? ______

Fourth Pedigree Problem:

Blood Types:

1. Drag and drop the square/circle shapes to form the correct pedigree using the information given.

2. After arranging shapes in the pedigree, drag and drop the genotype labels to place the correct one under each individual in the pedigree.

3. Drag and drop the generation labels to the appropriate locations.

4. Sketch your pedigree below.

5. Answer the questions at the bottom of the web page and check your answers. Fill in the correct answers below:

1. Write the cross for the parents (father x mother) in generation 1. ______

2. What blood type can the parents in generation 1 NOT produce? ______

3. What is the best way to write the genotype of the son with type A blood in generation 2? ______

4. What other blood type can be produced in generation 3? ______

5. Could the husband of the daughter in generation 2 have blood type B and still produce a type O child? ______

Quiz:

Complete the quiz questions online and correct any wrong answers. When you have all the answers correct, record them here.

1. A homozygous dominant female is represented by a(n): ______

2. A carrier male is represented by a(n): ______

3. In this tongue rolling cross, Rr x rr, what percent of the offpsring will be homozygous recessive? ______

4. The genotype for a tongue-roller is: ______

5. The genotype for blue eyes is: ______

6. In this eye color cross, Dd x DD, what percent of the offspring will have blue eyes? ______

7. True or False? A pedigree is a quick way to see all the genotypes and phenotypes in an entire family. ______

8. True or False? A male with diabetes would be represented by a half filled circle. ______

9. True or False? A man and woman both with type B blood can produce a child with blood type O. ______

10. Choose the genotype for the co-dominant blood type. ______