Exploring Genetic Engineering

Overview

Grade Level: 12
Subject: Science – Biology (Life Sciences)
Class Size: 2 students
Duration: 60 minutes
Curriculum Area: Next Generation Science Standards (NGSS) – High School Life Sciences
Relevant Standard(s):

• HS-LS3-1: Ask questions to clarify relationships about the role of DNA and chromosomes in coding the instructions for characteristic traits passed from parents to offspring.
• HS-LS3-3: Apply concepts of statistics and probability to explain the variation and distribution of expressed traits in a population.

---

Lesson Title

"Designer Genes: Ethics & Innovation in Genetic Engineering"

---

Desired Learning Outcomes

By the end of this lesson, students will be able to:

1. Explain the scientific principles behind modern genetic engineering techniques such as CRISPR.
2. Evaluate the potential benefits and risks associated with human genetic modification.
3. Apply critical thinking to discuss ethical dilemmas related to gene editing technologies.
4. Design and present a hypothetical genetic engineering project while considering both scientific feasibility and ethical responsibility.

---

Rationale

This lesson introduces students to one of the most rapidly advancing fields in biology—genetic engineering. At the senior high school level, students are developmentally ready to engage with complex scientific content and to assess real-world applications through ethical and societal lenses. With only two students, this format allows for a highly personalized, discussion-driven experience that nurtures both critical thinking and scientific communication.

---

Materials Needed

• Whiteboard and markers or digital equivalent (e.g., Jamboard, Miro)
• Printed or digital case study handout: “The CRISPR Twins – A Controversial Breakthrough”
• Blank DNA sequence worksheet
• Colored pencils or highlighters
• Timer or stopwatch
• Sticky notes (or digital comments, if online)
• “Genome Engineer” creative project template (provided by teacher)

---

Lesson Breakdown

🕒 Minute 1–10: Hook & Warm-Up

Activity: "Whose Gene Is It Anyway?"

• Present students with a series of trivia questions sharing real-world genetic traits (e.g., the gene for red hair, lactose intolerance, etc.)
• Ask students to guess whether each trait is polygenic or monogenic.
• Objective: Activate prior understanding of genetics in an engaging way.

Pedagogical approach: Constructivism – Linking new content to prior knowledge.

---

🕒 Minute 11–20: Core Knowledge – CRISPR Deep Dive

Mini-Lesson:

• Use a diagram to explain how CRISPR/Cas9 works: guide RNA, Cas9 enzyme, donor DNA.
• Highlight real-world applications (sickle cell anemia treatment, agricultural enhancements).
• Discuss the central role of DNA in coding proteins and traits (HS-LS3-1).

Micro-Activity:

• Students color-code a simplified DNA sequence for a genetic disorder and simulate a ‘fix’ using a CRISPR cut-out model.

Emphasis: Visual-based learning for strong conceptual retention.

---

🕒 Minute 21–30: Case Study – The CRISPR Twins

Case-based Discussion:

• Read the brief summary of the first gene-edited human embryos born in 2018.
• Students write on sticky notes: 1 benefit, 1 risk, 1 ethical concern.

Guiding Questions for Discussion:

• Was it justified to edit embryo genomes to prevent HIV?
• Who decides what genes should be altered?

Integrates critical thinking and ethical reasoning (HS-LS3-3 extended application).

---

🕒 Minute 31–45: Design Challenge – Become a Genome Engineer

Creative Task:

• Students are tasked with designing a hypothetical genetic modification in humans.
• Use a structured template:
  • What gene would you edit?
  • What would the benefits be?
  • What are potential risks or unintended consequences?
  • Ethical considerations?
  • Draw or digitally represent your “engineered human.”

Promotes synthesis of information and imaginative design. You'll be stunned by students' insight when encouraged to speculate responsibly.

---

🕒 Minute 46–55: Presentation & Peer Evaluation

Each student will present their Genome Engineer project in a 3-minute pitch.

• The other student gives structured feedback:
  • Scientific soundness
  • Ethical foresight
  • Innovation or imagination

This leverages the small group setting to build social-emotional collaboration and detailed feedback skills.

---

🕒 Minute 56–60: Reflect and Exit Ticket

Discussion Prompt:

“What might the world look like in 25 years if gene editing becomes common practice?”

Students answer in their science journals in 2–3 sentences.

Teacher Formative Assessment Checklist:

• Did students articulate how DNA relates to traits?
• Could they identify an ethical dilemma?
• Did their project show understanding and creativity?

---

Assessment Tools

• Informal observation during discussion
• Creative project (graded with a rubric based on scientific accuracy and ethical reasoning)
• Exit writing prompt (check for depth of reflection and understanding)

---

Extensions & Differentiation

For Deeper Engagement:

• Invite students to research and present real-world biotech companies working on gene editing.

For Struggling Learners:

• Provide a vocabulary sheet of key terms (e.g., genome, allele, gene therapy).
• Allow verbal descriptions in place of written responses.

---

Teacher Reflection Questions

• Did this lesson allow for enough open-ended discussion?
• Were students appropriately challenged by the ethical components?
• How might this be adapted into a collaborative, multi-day project?

---

Wow Factor

This lesson goes beyond rote memorization by placing students in the role of genetic engineers—a creative, ethical, and scientific twist that maximizes engagement. It blends active learning, design thinking, and real-world application, tailored to meet NGSS standards in an intimate classroom setting.

---

Standards Alignment Summary

NGSS Code	Description
HS-LS3-1	Analyze the role of DNA and chromosomes in trait inheritance
HS-LS3-3	Use probability to explain genetic variation and expression in populations

---

“Science is not only a discipline of reason but, also, one of romance and passion.”
— Stephen Hawking

Let’s make that passion real—in every lesson.