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1 Name: Period:

2 Go to: 1. What is the guy's name who discovered the basic rules of heredity? 2. In what country and time period did he live? 3. For what reason(s) did he use pea plants? (Plant Seeds) 4. As you scroll slowly through the pea plants, fill out the table below with the different traits you observe. Trait Option 1 Option 2 Pea Shape Pea Color Pod Shape Pod Color Flower Color Plant Size Flower Position (Cross Plants) 5. As you cross the plants, write down 4 observations you made about the offspring Answer the question presented on the weblab. Predict what shape the seeds will be when the two plants are crossed. 7. What did he call traits that appeared to mask (or hide) other traits? 8. What were the traits that seem to be hidden called? (pedigree activity) 9. CHECKMARK weather the traits below are dominant or recessive. Trait? (Check All That Apply)? (Check All That Apply) Purple Flowers White Flowers Round Peas Wrinkled Peas Yellow Peas Green Peas Constricted Pod Inflated Pod Yellow Pod Green Pod Tall Plant Dwarf Plant Axial Flower Position Terminal Flower Position

3 Go to: Play Pass The Genes 1. Everyone has versions of each of their. Each parent passes only version of a gene to his or her child. Child s Needed Trait Hair Type Hair Color Smile 2. Not all genes are created equal a gene will always show over a gene. Only the right combinations will make the traits we want for Melvin. Play the game, choosing traits from the parents to make a child that matches the picture in the upper right corner. a. Circle the traits below that are needed for the child. (Look at the picture in the upper right corner) b. Circle which trait is dominant and which trait is recessive. (Look at the parents cards) c. Circle the possible traits given by each parent. (Look at the parents cards) d. Circle which card from the MOTHER and which from the FATHER you chose. Option 1 Option 2 Straight Brown Dimples Wavy Blonde No Dimples Earlobes Detached Attached Trait Straight Wavy Brown Blonde Dimples No Dimples Detached Attached Trait Straight Wavy Brown Blonde Dimples No Dimples Detached Attached Mother: Card 1 Mother: Card 2 If you were CORRECT, you may play again or go continue to the website below! Mother s Card YOU Chose Father: Card 1 Father: Card 2 Father s Card YOU Chose Go to: Click Click Here to Enter 1. What is the problem your friend wants to find the answer to? 2. What tool do scientists sometime use in order to find the possible outcomes of the offspring? (click next) 3. A Punnett square lets you display all the possible combinations of that will result from a cross. Your friend especially wants chickens. and are the two alleles for this gene. is dominant producing brown feathers and b is resulting in yellow feathers. (click next) 4. Two for the color gene from each parent have been separated and each given a or a. (Click on EACH CHICKEN) (then click next) 5. Some allele combinations show up more than others. On average, these are more likely to be produced when these two chickens mate. 6. What is the ROOSTER S genotype? (circle one) BB Bb bb 7. What is the HEN S genotype? (circle one) BB Bb bb 8. What are the 4 GENOTYPES found in the Punnett square? 9. (answer the question from the activity) How often would we expect to see brown chickens if your friend breeds these two chickens? 10. Work through the LEMMINGS Punnett square activity! Pay attention to what you re doing!

4 Use your web-searching skills and go to any reliable website to answer the following questions: What is mitosis? What types of cells use mitosis to divide? What types of organisms use mitosis to divide? What are the steps of mitosis? Interphase,,,,, and cytokinesis. Go to On the left side of the screen is a navigation bar, click on the link to MITOSIS Read the text on this page and view the animation, you can slow down the video by clicking step by step through the phases. 1. Which stage does the following occur Chromatin condenses into chromosomes Chromosomes align in center of cell. Longest part of the cell cycle. Nuclear envelope breaks down. Cell is cleaved into two new daughter cells. Daughter chromosomes arrive at the poles.

5 Watch the video carefully. 2. The colored chromosomes represent chromatids. There are two of each color because one is an exact duplicate of the other. --How many chromosomes are visible at the beginning of mitosis? -- How many are in each daughter cell at the end of mitosis? --The little green T shaped things on the cell are: -- What happens to the centrioles during mitosis? 3. Identify the stages of these cells: Another Mitosis Animation Go to View the animation and sketch the cell in: Prophase Metaphase Telophase

6 Use your web-searching skills and go to any reliable website to answer the following questions: What is meiosis? What types of cells use meiosis to divide? What types of organisms use meiosis to divide? Go to 1. Read through the introduction information. 2. Select the Animation tab. 3. Select the Narrated button and listen to and watch the simulation. 4. When the animation finishes, select Intro to return to the start. This time, select Step through so that you can fill in the chart below. Follow the prompts to watch each step and read its explanation. 5. When you get to the end, select the Conclusion tab. Read it through, then write your own summary of the purposes of Meiosis in the space provided.

7 Phase Diagram What is happening Interphase Prophase I Early - Middle Prophase I Late Metaphase I Anaphase I Telophase I

8 Prophase II Metaphase II Anaphase II Telophase II Go to Take the 8 th Grade Science Online Sample Test! Take any 8 th Grade Online Sample Test!