What Caused Mateo's Cleft?
Disease domain · Lesson 9 of 20 · Shared clinical backbone (the cleft team)
Today's goal: Students will explain that nonsyndromic clefts arise from many small genetic influences combined with environmental factors (multifactorial cause), using real twin and risk-factor data, and apply that model to Mateo without blaming a single cause.
This is a model of the work you should turn in. Use it to check your own: match the structure and the level of detail, do not copy it. Your wording should be your own.
To Mateo's mother: 'A cleft like Mateo's is almost never caused by one single thing, and it is not something you did. It comes from many small genetic influences adding up together with ordinary factors during pregnancy, and it only appears when all of those tip past a threshold. We know genes matter, because identical twins are both affected about 60% of the time, far more than the 5 to 10% for siblings, but genes are not the whole story either. Even the strongest known pregnancy factor, smoking, raises the odds only a little (about 1.3 times), and you had none of the major risk factors. Most families in your situation could not have prevented it, and there is no one to blame.'
This model shows the level of evidence and organization needed to complete: A short, honest, specific, and non-blaming parent-counseling response about a multifactorial cause.
- Write one defensible claim.
- Choose specific evidence that supports the claim.
- Explain the scientific rule that connects the evidence to the claim.
Keep the structure. Replace the question, facts, measurements, and evidence. Then recheck units, vocabulary, and whether the conclusion goes beyond the evidence.
Also due today: Hold the diagnosis open; this 'many small causes' picture is a breadcrumb, not a named diagnosis.
The finished product above did not appear all at once. Here is the path from the question to the turned-in work, so you can follow the same steps.
- 1Start from today's question: Why do most kids with a have no single thing to blame?
- 2Work the Model and the Explore questions to reason it out before writing anything.
- 3Pull the specific evidence the product needs from the reading and any database you used.
- 4Write it up in the required format: Write a 3 to 4 sentence counseling response to Mateo's mother asking 'Was it something I did?' that is (1) honest about cause (multifactorial, genes plus environment, threshold), (2) specific (uses one real number), and (3) non-blaming (reflects that she had none of the major risk factors and most clefts happen without one).
- 5Check it against the rubric, then submit.
| Criterion | Proficient | Developing | Beginning |
|---|---|---|---|
| Complete | Every required part of the artifact is present and filled in. | Most parts are present, but one is missing or left blank. | Several parts are missing. |
| Accurate | The science and data are correct and match the evidence. | Mostly correct, with a small factual slip. | Key science or data is wrong. |
| Scientific reasoning (CER) | States a claim, backs it with specific evidence, and explains the reasoning. | Has a claim and evidence, but the reasoning is thin or missing. | Gives an answer with no evidence or reasoning. |
| Professional communication | Clear, organized, and labeled the way a clinician or scientist would write it. | Readable but disorganized or missing labels. | Hard to follow. |
| Submitted | Turned in through the route named under Submit here and confirmed. | Turned in, but in the wrong place or unconfirmed. | Not turned in. |
- CompleteProficient: Nothing is left blank: the model fills every part of "Write a 3 to 4 sentence counseling response to Mateo's mother asking 'Was it something I did?' that is (1) honest about cause (multifactorial, genes plus environment, threshold), (2) specific (uses one real number), and (3) non-blaming (reflects that she had none of the major risk factors and most clefts happen without one).".
- AccurateProficient: Every number and claim matches the case evidence.
- Scientific reasoning (CER)Proficient: It names a claim, cites the specific evidence, and explains the reasoning, not just the answer.
- Professional communicationProficient: It is organized and labeled like a real chart note.
- SubmittedProficient: It would be attached to your class form or handed in, and confirmed.
One exam-style question that uses exactly what you practiced today. Try it before you reveal the answer, then read why each choice is right or wrong.
Tap an answer to see the full explanation. Nothing is recorded or graded.
It builds this reusable test skill: Interpreting twin concordance and odds ratios to identify a multifactorial cause.
- Name the concept or data pattern being tested.
- Cross out choices that violate that rule or the evidence.
- Justify the best remaining choice before checking the answer.