Mateo's Complete Developmental Story
Developmental domain · Lesson 20 of 20 · Principles of Biomedical Science (PBS)
Today's goal: Assemble the twenty-lesson evidence into one normal-versus-failed developmental account of Mateo's cleft, and conclude that it is an isolated failure of fusion in a specific window (nonsyndromic, multifactorial), with the developmental story handed off to the other teams.
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.
Developmental team entry: Between weeks 4 and 12, the left lip-front fusion (~week 6) and the secondary palate fusion (~weeks 8 to 12) failed to complete, so the failed step is lip and palate fusion within that window. Two pieces of evidence that the failure is isolated rather than syndromic: the newborn exam found no other birth defects, and the cranial neural crest built a normal jaw, ears, and face apart from the cleft, so no broad patterning program collapsed. The cleft is multifactorial, meaning several small genetic, epigenetic, and environmental contributions added up over a threshold rather than one all-or-nothing gene, which fits the sparse family history and the second-hit behavior of isolated clefting (PMID:26589921; PMID:28550290). We find an isolated, multifactorial fusion failure, and we pass Mateo to the genetics, anatomical, and clinical teams to add their views.
This model shows the level of evidence and organization needed to complete: A synthesis paragraph that names the diagnosis, cites isolated and multifactorial evidence, and hands off the case.
- 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.
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: Which cards establish sequence?
- 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 the developmental team's one-paragraph entry for Mateo's . It must (1) name the failed step and its window, (2) give two pieces of evidence that the failure is isolated rather than syndromic, (3) state that it is multifactorial and say what that means, and (4) end by handing the case to the next teams. Keep it honest and free of overpromising; Mateo is a composite case.
- 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 the developmental team's one-paragraph entry for Mateo's Domain Report. It must (1) name the failed step and its window, (2) give two pieces of evidence that the failure is isolated rather than syndromic, (3) state that it is multifactorial and say what that means, and (4) end by handing the case to the next teams. Keep it honest and free of overpromising; Mateo is a composite case.".
- 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: Synthesizing evidence to classify a cleft as isolated and multifactorial.
- 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.