Students analyze medical histories and karyotypes to diagnose genetic and environmental birth defects.
This digital biology lesson places students in the role of medical professionals diagnosing birth defects using real data sources and structured reasoning. Students analyze karyotypes and medical records to determine whether conditions result from chromosomal abnormalities or prenatal exposure to teratogens.
Rather than learning about birth defects through isolated facts, students apply genetics and developmental biology concepts in an authentic diagnostic context.
Students begin by reviewing:
• placental diffusion
• the difference between mutagens and teratogens
They then work through guided instruction on:
• common teratogens
• how prenatal exposure affects development
• how to identify chromosomal syndromes using a karyotype key
Students complete a series of case studies involving 10 infants with birth defects. For each case, they:
• examine medical forms and exposure histories
• analyze a karyotype
• identify the syndrome or condition
• determine whether the cause is chromosomal or teratogenic
• justify their conclusion using evidence
• Placental diffusion
• Mutagens vs. teratogens
• Prenatal development
• Chromosomal disorders
• Karyotype analysis
• Evidence-based diagnosis
• Claim–Evidence–Reasoning (CER)
• Connects genetics to real medical scenarios
• Builds analytical and reasoning skills
• Reinforces karyotype interpretation
• Supports inquiry and problem-solving
• Encourages evidence-based thinking
• Works for guided instruction or independent practice
• Minimal prep required
This resource is a digital interactive lesson (Google Slides compatible).
Includes:
✔ Student case files
✔ Karyotype reference key
✔ Guided diagnostic prompts
✔ Teacher answer key
✔ Exit ticket
Students should already know how to read and interpret karyotypes before completing this lesson.
• High school biology
• Genetics and heredity units
• Human reproduction and development
• Biomedical or medical science courses
• Case-based instruction
To preview this lesson, click here
NGSS Alignment:
HS-LS3-1, HS-LS3-2
HS-LS1-1
Science & Engineering Practices (SEPs):
Analyzing and Interpreting Data; Constructing Explanations; Engaging in Argument from Evidence
Crosscutting Concepts (CCCs):
Cause and Effect; Systems and System Models; Stability and Change
Common Core (Literacy in Science):
RST.9-10.1 / RST.11-12.1
RST.9-10.4 / RST.11-12.4
WHST.9-12.2
Students analyze medical histories and karyotypes to diagnose genetic and environmental birth defects.
This digital biology lesson places students in the role of medical professionals diagnosing birth defects using real data sources and structured reasoning. Students analyze karyotypes and medical records to determine whether conditions result from chromosomal abnormalities or prenatal exposure to teratogens.
Rather than learning about birth defects through isolated facts, students apply genetics and developmental biology concepts in an authentic diagnostic context.
Students begin by reviewing:
• placental diffusion
• the difference between mutagens and teratogens
They then work through guided instruction on:
• common teratogens
• how prenatal exposure affects development
• how to identify chromosomal syndromes using a karyotype key
Students complete a series of case studies involving 10 infants with birth defects. For each case, they:
• examine medical forms and exposure histories
• analyze a karyotype
• identify the syndrome or condition
• determine whether the cause is chromosomal or teratogenic
• justify their conclusion using evidence
• Placental diffusion
• Mutagens vs. teratogens
• Prenatal development
• Chromosomal disorders
• Karyotype analysis
• Evidence-based diagnosis
• Claim–Evidence–Reasoning (CER)
• Connects genetics to real medical scenarios
• Builds analytical and reasoning skills
• Reinforces karyotype interpretation
• Supports inquiry and problem-solving
• Encourages evidence-based thinking
• Works for guided instruction or independent practice
• Minimal prep required
This resource is a digital interactive lesson (Google Slides compatible).
Includes:
✔ Student case files
✔ Karyotype reference key
✔ Guided diagnostic prompts
✔ Teacher answer key
✔ Exit ticket
Students should already know how to read and interpret karyotypes before completing this lesson.
• High school biology
• Genetics and heredity units
• Human reproduction and development
• Biomedical or medical science courses
• Case-based instruction
To preview this lesson, click here
NGSS Alignment:
HS-LS3-1, HS-LS3-2
HS-LS1-1
Science & Engineering Practices (SEPs):
Analyzing and Interpreting Data; Constructing Explanations; Engaging in Argument from Evidence
Crosscutting Concepts (CCCs):
Cause and Effect; Systems and System Models; Stability and Change
Common Core (Literacy in Science):
RST.9-10.1 / RST.11-12.1
RST.9-10.4 / RST.11-12.4
WHST.9-12.2
