Following Chromosomal DNA Movement through Meiosis Lab Report

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Following Chromosomal DNA Movement through Meiosis Lab Report

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Lab 5: Meiosis . Pre-Lab

Questions 1. What major event occurs during interphase? 2. A person, residing in a location where they are exposed to the sun often, develops a mutation in some of their skin cells resulting in cancer. Consider whether their offspring will be born with the same mutation. Use scientific evidence to support your answer. Experiment 1: Following Chromosomal DNA Movement through Meiosis Data Tables and Post-Lab Assessment Part 1 – Meiotic Division Beads Diagram without Crossing Over Prophase I Metaphase I © eScience Labs, LLC 2014 Anaphase I Telophase I Prophase II Metaphase II Anaphase II Telophase II Cytokinesis Part 2: Meiotic Division Beads Diagram with Crossing Over Prophase I Metaphase I Anaphase I Telophase I © eScience Labs, LLC 2014 Prophase II Metaphase II Anaphase II Telophase II Cytokinesis Post-Lab Questions 1. What is the ploidy of the DNA at the end of meiosis I? What about at the end of meiosis II? 2. How are meiosis I and meiosis II different? 3. Why do you use non-sister chromatids to demonstrate crossing over? 4. What combinations of alleles could result from a crossover between BD and bd chromosomes? © eScience Labs, LLC 2014 5. How many chromosomes were present when meiosis I started? 6. How many nuclei are present at the end of meiosis II? How many chromosomes are in each? 7. Identify two ways that meiosis contributes to genetic recombination. 8. Why is it necessary to reduce the number of chromosomes in gametes, but not in other cells? 9. Blue whales have 44 chromosomes in every cell. Determine how many chromosomes you would expect to find in the following: Sperm Cell: Egg Cell: © eScience Labs, LLC 2014 Daughter Cell from Meiosis I: Daughter Cell from Meiosis II: 10. Research and find a disease that is caused by chromosomal mutations. When does the mutation occur? What chromosomes are affected? What are the consequences? 11. Diagram what would happen if sexual reproduction took place for four generations using diploid (2n) cells. Experiment 2: The Importance of Cell Cycle Control Data 1. 2. 3. 4. © eScience Labs, LLC 2014 5. Post-Lab Questions 1. Record your hypothesis from Step 1 in the Procedure section here. 2. What do your results indicate about cell cycle control? 3. Suppose a person developed a mutation in a somatic cell which diminishes the performance of the body’s natural cell cycle control proteins. This mutation resulted in cancer, but was effectively treated with a cocktail of cancer-fighting techniques. Is it possible for this person’s future children to inherit this cancer-causing mutation? Be specific when you explain why or why not. 4. Why do cells which lack cell cycle control exhibit karyotypes which look physically different than cells with normal cell cycle. 5. What are HeLa cells? Why are HeLa cells appropriate for this experiment? © eScience Labs, LLC 2014

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Main Posting 45 (45%) – 50 (50%)

Answers all parts of the discussion question(s) expectations with reflective critical analysis and synthesis of knowledge gained from the course readings for the module and current credible sources.

 

Supported by at least three current, credible sources.

 

Written clearly and concisely with no grammatical or spelling errors and fully adheres to current APA manual writing rules and style.

40 (40%) – 44 (44%)

Responds to the discussion question(s) and is reflective with critical analysis and synthesis of knowledge gained from the course readings for the module.

 

At least 75% of post has exceptional depth and breadth.

 

Supported by at least three credible sources.

 

Written clearly and concisely with one or no grammatical or spelling errors and fully adheres to current APA manual writing rules and style.

35 (35%) – 39 (39%)

Responds to some of the discussion question(s).

 

One or two criteria are not addressed or are superficially addressed.

 

Is somewhat lacking reflection and critical analysis and synthesis.

 

Somewhat represents knowledge gained from the course readings for the module.

 

Post is cited with two credible sources.

 

Written somewhat concisely; may contain more than two spelling or grammatical errors.

 

Contains some APA formatting errors.

0 (0%) – 34 (34%)

Does not respond to the discussion question(s) adequately.

 

Lacks depth or superficially addresses criteria.

 

Lacks reflection and critical analysis and synthesis.

 

Does not represent knowledge gained from the course readings for the module.

 

Contains only one or no credible sources.

 

Not written clearly or concisely.

 

Contains more than two spelling or grammatical errors.

 

Does not adhere to current APA manual writing rules and style.

Main Post: Timeliness 10 (10%) – 10 (10%)

Posts main post by day 3.

0 (0%) – 0 (0%) 0 (0%) – 0 (0%) 0 (0%) – 0 (0%)

Does not post by day 3.

First Response 17 (17%) – 18 (18%)

Response exhibits synthesis, critical thinking, and application to practice settings.

 

Responds fully to questions posed by faculty.

 

Provides clear, concise opinions and ideas that are supported by at least two scholarly sources.

 

Demonstrates synthesis and understanding of learning objectives.

 

Communication is professional and respectful to colleagues.

 

Responses to faculty questions are fully answered, if posed.

 

Response is effectively written in standard, edited English.

15 (15%) – 16 (16%)

Response exhibits critical thinking and application to practice settings.

 

Communication is professional and respectful to colleagues.

 

Responses to faculty questions are answered, if posed.

 

Provides clear, concise opinions and ideas that are supported by two or more credible sources.

 

Response is effectively written in standard, edited English.

13 (13%) – 14 (14%)

Response is on topic and may have some depth.

 

Responses posted in the discussion may lack effective professional communication.

 

Responses to faculty questions are somewhat answered, if posed.

 

Response may lack clear, concise opinions and ideas, and a few or no credible sources are cited.

0 (0%) – 12 (12%)

Response may not be on topic and lacks depth.

 

Responses posted in the discussion lack effective professional communication.

 

Responses to faculty questions are missing.

 

No credible sources are cited.

Second Response 16 (16%) – 17 (17%)

Response exhibits synthesis, critical thinking, and application to practice settings.

 

Responds fully to questions posed by faculty.

 

Provides clear, concise opinions and ideas that are supported by at least two scholarly sources.

 

Demonstrates synthesis and understanding of learning objectives.

 

Communication is professional and respectful to colleagues.

 

Responses to faculty questions are fully answered, if posed.

 

Response is effectively written in standard, edited English.

14 (14%) – 15 (15%)

Response exhibits critical thinking and application to practice settings.

 

Communication is professional and respectful to colleagues.

 

Responses to faculty questions are answered, if posed.

 

Provides clear, concise opinions and ideas that are supported by two or more credible sources.

 

Response is effectively written in standard, edited English.

12 (12%) – 13 (13%)

Response is on topic and may have some depth.

 

Responses posted in the discussion may lack effective professional communication.

 

Responses to faculty questions are somewhat answered, if posed.

 

Response may lack clear, concise opinions and ideas, and a few or no credible sources are cited.

0 (0%) – 11 (11%)

Response may not be on topic and lacks depth.

 

Responses posted in the discussion lack effective professional communication.

 

Responses to faculty questions are missing.

 

No credible sources are cited.

Participation 5 (5%) – 5 (5%)

Meets requirements for participation by posting on three different days.

0 (0%) – 0 (0%) 0 (0%) – 0 (0%) 0 (0%) – 0 (0%)

Does not meet requirements for participation by posting on 3 different days.

Total Points: 100