7B Mendelian Genetics
I can apply concepts of statistics and probability to
explain variation and distribution of expressed traits in a population.
explain variation and distribution of expressed traits in a population.
MLS: LS3B-4
activity 1: Video - What is Inheritance?You may work in PAIRS for this activity. Go to the link below and watch the video introduction to genetics.
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activity 5: basic genetics notesThis is the second half of the genetics notes. In this section, we will focus on some basic terminology for genetics and how to use punnett squares to predict the probability of offspring from a variety of crosses. Be sure to take good notes. Go to Google Classroom for the 2nd video for this section.
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activity 7: punnett square tutorialClick on the link below to go over a simple punnett square tutorial. I know that you have done a lot of punnett squares in middle school, but I just want to make sure everyone is on the same page before we continue. If you do not understand how to use a punnett square, please ask your instructor for help.
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activity 8: image practiceFor this activity you will work in PAIRS. Look at the images below. Take turns answering the questions listed. If you disagree with your partner, have a discussion and figure out which answer is correct. When you are confident that you have correctly answered each question, call your instructor over to check your work.
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In the image to the right, two brown haired guinea pigs are bred together.
1. What is the percentage of brown haired offspring? 2. What is the percentage of light haired offspring? 3. What is the percentage of heterozygous offspring? |
In the image to the left, two freckles individuals are crossed.
1. What is the probability that they will have a freckled offspring? 2. What is the percentage of homozygous offspring? |
Activity 10: Lab: Predict Actual RatiosYou will work in PAIRS for this activity. Pick up a lab handout titled How Well Does Punnett Squares Predict Actual Ratios? With your partner work through the handout. You will first complete punnett squares to make your "prediction" for 2 different scenarios. Then you will use pennies to represent the alleles. Heads will represent a dominant allele (T). Tails will represent a recessive allele (t). Yes. You will flip the coins 100 times! Remember to get valid data from an experiment, you need to have a large enough data set! Complete the activity and answer all analysis questions.
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activity 11: Human characteristics article and activityYou will work in PAIRS for this activity. READ and HIGHLIGHT the Observable Human Characteristics Article to give you an introduction to some of the many traits seen in humans. When you are finished READ and HIGHLIGHT introduction to the Human Characteristics packet. Be sure to pay particular attention to the example chromosomes at the bottom of the first page. DISCUSS each question with your partner. If you do not agree, discuss until you figure out the correct answer. Have you instructor check your work when you are finished.
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activity 12: The Latest ScienceYou may watch the video in PAIRS. Now that you understand simply inheritance and how alleles are passed from parents to offspring, watch the video below about Molly Troxel. See how a recessive trait can be passed from parent to offspring resulting in disease. Then see what scientists are able to do help patients like Molly.
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