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Mosaic Minutes

Life Science Class Summary 4/13/15

4/16/2015

 
with Leigh Ann Yoder

All in the Family Projects

The students are progressing nicely on their projects. Now that they understand Punnett Squares, they are to add the five squares (one for each trait) for each of the F1 and F2 generations. Students should be able to discuss the differences between the theoretical and experimental probabilities as they relate to their offspring. Projects are due next class and I will hold them to display during our final class.

Review

Review of both sections 3.2 and 3.3 began with a brief math lesson on theoretical probability. Students are expected to know how to compute and express theoretical probability for independent events. We also contrasted with experimental probability and discussed how the two would merge when a large enough data set is used. A review of Punnett Squares, genotype, phenotype, homozygous traits, heterozygous traits and co-dominance followed. Students should be able to use these terms correctly.

Model of Meiosis

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The best way to understand Meiosis is to make a model of it. Students were supplied with poster board and a variety of materials to use to make their models. As they worked we were able to discuss the process more in depth. The main point to remember is that Meiosis is different from Mitosis in that one cell splits into 4 sex cells, each with one-half the original number of chromosomes. While students worked on their projects they could see that the first stage of Meiosis is basically Mitosis, and it is only the second stage that differs. Many students were not able to complete their projects during class time. I have asked for them to complete at home and bring in next week.

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Video Field Trip

At the end of class we watched a video on mutations, specifically the one that cause Sickle Cell Anemia. We will delve deeper into mutations during our next class period. I briefly began to speak to the class about their final project. They will each be required to prepare a presentation on a genetic disorder. They are not to begin their projects yet. Over the next two weeks I will be giving the specifics and students will be choosing topics. More to follow!

Homework

Mandatory:
Finish your Pet Project at home and bring to class next week. Include Punnett squares for each generation and each trait (5 squares for each generation). Make certain your name is on the front.

Finish your model of Meiosis (begun in class), bring to class next week. Make certain to label and describe each step. Add your name to the front.

Read 3.4 The DNA Connection and complete the Study Guide

Optional:
Study for Chapter 3 Test
Chapter 3 Key Terms and Connecting Concepts
Online Activity pg. 101

Note:
Optional Chapter 3 review will be held next Monday at 9:30AM

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