Mystery Sequence Detective: Analyze DNA/RNA to Solve Crimes
Created byAmulya Sunder
27 views2 downloads

Mystery Sequence Detective: Analyze DNA/RNA to Solve Crimes

Grade 9Science1 days
In the 'Mystery Sequence Detective' project, 9th-grade students immerse themselves in the world of forensic science to solve a fictional crime using their understanding of DNA and RNA. Through various activities such as creating Venn diagrams to compare the structural differences of DNA and RNA, accessing genetic databases, and simulating genetic mutations, students learn how these molecular structures store and transmit genetic information, and how genetic variations and mutations can impact forensic investigations. The project encourages critical thinking by requiring students to apply forensic techniques and scientific principles to real-world contexts.
DNARNAForensic ScienceGenetic MutationsStructural DifferencesCrime SolvingGenetic Information
Want to create your own PBL Recipe?Use our AI-powered tools to design engaging project-based learning experiences for your students.
📝

Inquiry Framework

Question Framework

Driving Question

The overarching question that guides the entire project.How can students use their knowledge of the structural differences between DNA and RNA, and modern forensic techniques, to solve a fictional crime involving genetic mutations?

Essential Questions

Supporting questions that break down major concepts.
  • What are the key structural differences between DNA and RNA?
  • How can understanding DNA sequences aid in solving a crime?
  • What techniques are used to analyze DNA/RNA sequences in forensic science?
  • In what ways do mutations in DNA/RNA sequences affect living organisms?
  • How does the structure of DNA and RNA relate to their function in genetic information storage and transmission?

Standards & Learning Goals

Learning Goals

By the end of this project, students will be able to:
  • Students will understand and be able to describe the structural differences between DNA and RNA.
  • Students will be able to apply their knowledge of DNA and RNA structures to solve practical problems, such as fictional crimes using forensic techniques.
  • Students will develop an understanding of how genetic information is stored, transmitted, and can mutate, affecting organisms.
  • Students will learn the basic techniques used in forensic science for analyzing DNA and RNA sequences.
  • Students will evaluate the role of DNA in coding instructions for characteristic traits and how mutations can affect these traits.

NGSS

HS-LS3-1
Primary
Ask questions to clarify relationships about the role of DNA and chromosomes in coding the instructions for characteristic traits passed from parents to offspring.Reason: This standard emphasizes understanding DNA which is crucial for solving crimes using DNA evidence, fitting well with the project's focus on structural differences of DNA and RNA and their forensic applications.
HS-LS3-2
Primary
Make and defend a claim based on evidence that inheritable genetic variations may result from new genetic combinations, viable errors occurring during replication, and mutations caused by environmental factors.Reason: Understanding genetic variations and mutations is essential in solving the fictional crime in the project, as it involves analyzing DNA/RNA sequences.
HS-LS1-1
Secondary
Construct an explanation based on evidence for how the structure of DNA contributes to the function of genetics in storing and transmitting information.Reason: Aligns with the project's objective to differentiate DNA and RNA structures and to understand how these structures store genetic information.

Entry Events

Events that will be used to introduce the project to students

Forensic Science Fair

Students step into the role of forensic scientists at a fictional community science fair where a mysterious crime has occurred. They are tasked with solving the crime using DNA/RNA analysis tools, engaging students’ competitive spirit and curiosity about forensic science.
📚

Portfolio Activities

Portfolio Activities

These activities progressively build towards your learning goals, with each submission contributing to the student's final portfolio.
Activity 1

DNA vs. RNA Detective Showdown

Students explore the structural differences between DNA and RNA through an engaging comparison activity. This first activity sets the stage for understanding how each molecule functions in genetic information storage and forensic applications.

Steps

Here is some basic scaffolding to help students complete the activity.
1. Review background information on DNA and RNA, focusing on their basic structures.
2. Create a Venn diagram to compare and contrast DNA and RNA, focusing on key differences and similarities.
3. Discuss as a class the functional implications of these structural differences.

Final Product

What students will submit as the final product of the activityA completed Venn diagram highlighting the structural and functional differences between DNA and RNA.

Alignment

How this activity aligns with the learning objectives & standardsAligns with NGSS HS-LS1-1 by helping students construct an explanation for how DNA's structure contributes to its genetic function.
Activity 2

Genetic Sequencing Scavenger Hunt

Students conduct a scavenger hunt using online databases to find real examples of DNA and RNA sequences. This activity builds upon their foundational knowledge from the first activity.

Steps

Here is some basic scaffolding to help students complete the activity.
1. Access online databases such as GenBank to find examples of DNA and RNA sequences.
2. Identify and record three sequences for DNA and RNA, noting structural variations.
3. Discuss with peers how these sequences relate to their function and forensic application.

Final Product

What students will submit as the final product of the activityA portfolio containing various DNA and RNA sequences, complete with annotations on their structure and function.

Alignment

How this activity aligns with the learning objectives & standardsSupports NGSS HS-LS3-1 as students investigate how different sequences code for traits and how this relates to forensic science.
Activity 3

Mutation Mystery Workshop

Students simulate mutations and analyze their effects on genetic sequences. This activity deepens understanding by introducing the concept of mutations and how they can be identified and used in forensic applications.

Steps

Here is some basic scaffolding to help students complete the activity.
1. Review types of genetic mutations and their potential effects.
2. Use an interactive simulation to introduce specific mutations into DNA and RNA sequences.
3. Analyze and document the changes in the sequences and predict how these mutations could affect traits or organismal functions.

Final Product

What students will submit as the final product of the activityA mutation report showcasing the original and mutated sequences, with predicted effects on traits or functions.

Alignment

How this activity aligns with the learning objectives & standardsAligns with NGSS HS-LS3-2 by helping students defend claims about genetic variations resulting from mutations, as applicable in a forensic context.
🏆

Rubric & Reflection

Portfolio Rubric

Grading criteria for assessing the overall project portfolio

DNA/RNA Mystery Sequence Assessment Rubric

Category 1

Structural Analysis

Evaluation of student understanding of DNA and RNA structures and their differences.
Criterion 1

Comparison and Description

Ability to accurately compare and contrast DNA and RNA structures using a Venn diagram.

Exemplary
4 Points

Provides a comprehensive and detailed Venn diagram illustrating sophisticated comparisons with complex insights into structural variations and functional implications.

Proficient
3 Points

Provides a clear Venn diagram with thorough comparisons of DNA and RNA, accurately detailing key structural differences and functions.

Developing
2 Points

Provides a basic Venn diagram that identifies most key differences and similarities between DNA and RNA with some detail.

Beginning
1 Points

Provides an incomplete Venn diagram with minimal or inaccurate information about the differences and similarities between DNA and RNA.

Criterion 2

Functional Implications Discussion

Quality of participation in discussions about the structural differences and their implications on function in genetics.

Exemplary
4 Points

Leads insightful discussions, demonstrating advanced understanding of how structural differences affect genetic functions.

Proficient
3 Points

Contributes effectively to discussions, showing a solid understanding of the functional implications of structural differences.

Developing
2 Points

Participates in discussions with some understanding of structural differences and their functional implications.

Beginning
1 Points

Has difficulty participating in discussions, showing limited understanding of how structural differences impact genetic functions.

Category 2

Sequence Identification and Analysis

Assessment of students' ability to identify and analyze DNA/RNA sequences using online resources.
Criterion 1

Sequence Collection and Annotation

Effectiveness in collecting and annotating DNA and RNA sequences, highlighting structural features and functions.

Exemplary
4 Points

Collects a diverse set of sequences with detailed annotations, demonstrating sophisticated understanding of structure-function relationships.

Proficient
3 Points

Collects sequences with clear annotations, effectively identifying structural features relevant to their functions.

Developing
2 Points

Collects sequences with some annotations, partially identifying relevant structural features.

Beginning
1 Points

Collects sequences with minimal annotations, showing limited ability to identify structural features.

Criterion 2

Peer Discussion

Contribution to peer discussions about sequence functions and forensic applications.

Exemplary
4 Points

Facilitates peer discussions with innovative insights into the forensic applications of sequence functions.

Proficient
3 Points

Shares relevant insights in discussions, demonstrating a solid understanding of forensic applications.

Developing
2 Points

Participates in discussions with some understanding of forensic applications.

Beginning
1 Points

Participates minimally, with limited understanding of forensic applications.

Category 3

Mutation Analysis

Evaluation of student ability to simulate, analyze, and report on genetic mutations and their effects.
Criterion 1

Mutation Simulation and Documentation

Effectiveness in documenting simulated mutations and analyzing their effects on sequences and organismal traits.

Exemplary
4 Points

Produces comprehensive reports with detailed analyses of mutations and sophisticated predictions of their effects on traits.

Proficient
3 Points

Produces thorough reports with clear analyses and predictions about the effects of mutations on traits.

Developing
2 Points

Produces basic reports with some analysis of mutations and their effects.

Beginning
1 Points

Produces incomplete reports with minimal analysis of mutations and their effects.

Criterion 2

Claim Defense

Ability to defend claims about genetic variations resulting from mutations, within forensic contexts.

Exemplary
4 Points

Defends claims using strong evidence and reasoning, demonstrating deep understanding of genetic variations.

Proficient
3 Points

Defends claims effectively with clear evidence and sound reasoning.

Developing
2 Points

Defends claims with some evidence, showing basic reasoning skills.

Beginning
1 Points

Struggles to defend claims, providing insufficient evidence and reasoning.

Reflection Prompts

End-of-project reflection questions to get students to think about their learning
Question 1

Reflect on the key structural differences between DNA and RNA that you learned in this project. How do these differences affect their functions in genetic information storage and transmission?

Text
Required
Question 2

On a scale from 1 to 5, how confident are you in your ability to differentiate between DNA and RNA structures based on this project's activities?

Scale
Required
Question 3

Which forensic techniques related to DNA and RNA analysis did you find most interesting or useful in solving the fictional crime, and why?

Text
Required
Question 4

How well did the activities in this project help you understand the importance of genetic variations and mutations in forensic science?

Scale
Required
Question 5

Which essential question from the project do you feel you gained the most insight into, and what new understanding do you have?

Multiple choice
Required
Options
What are the key structural differences between DNA and RNA?
How can understanding DNA sequences aid in solving a crime?
What techniques are used to analyze DNA/RNA sequences in forensic science?
In what ways do mutations in DNA/RNA sequences affect living organisms?
How does the structure of DNA and RNA relate to their function in genetic information storage and transmission?