biology

Pierre Robin sequence-faciodigital anomaly syndrome

Pierre Robin sequence-faciodigital anomaly syndrome is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Pierre Robin sequence-faciodigital anomaly syndrome rather than just read about it. In short: Pierre Robin sequence-faciodigital anomaly syndrome, also known as Chitayat Meunier Hodgkinson syndrome, is a very rare genetic disorder which is characterized by the signs typical of Pierre Robin sequence along with facial dysmorphisms and digital anomalies. Intellect is not affected.

Key takeaways

Pierre Robin sequence-faciodigital anomaly syndrome belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Pierre Robin sequence-faciodigital anomaly syndrome to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Pierre Robin sequence-faciodigital anomaly syndrome from memory before moving on to harder problems.

Reference excerpt

Pierre Robin sequence-faciodigital anomaly syndrome, also known as Chitayat Meunier Hodgkinson syndrome, is a very rare genetic disorder which is characterized by the signs typical of Pierre Robin sequence along with facial dysmorphisms and digital anomalies. Intellect is not affected. It is thought to be inherited in an X-linked recessive manner.

Signs and symptoms This list comprises all the symptoms people with this disorder exhibit:

Retrognathism (belonging to Pierre Robin sequence) Glossoptosis (belonging to Pierre Robin sequence) Cleft palate (belonging to Pierre Robin sequence) High forehead Tapering fingers Hyperconvex digital nails Fifth finger clinodactyly Distal brachyphalangy Triphalangeal thumb First metacarpophalangeal joints which subluxate easily

Epidemiology Only 2 cases have been described in medical literature: two half-brothers from Quebec, Canada who shared the same mother, these brothers suffered from the symptoms mentioned above. The mother only had mild hyperopia. The fathers and the mother weren't related and both the mother and the children were of French-Canadian descent.

References

Illustrations

Worked examples

Example 1 — a first encounter with Pierre Robin sequence-faciodigital anomaly syndrome

Start with the simplest possible case. Write down what Pierre Robin sequence-faciodigital anomaly syndrome claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Pierre Robin sequence-faciodigital anomaly syndrome before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Pierre Robin sequence-faciodigital anomaly syndrome ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Pierre Robin sequence-faciodigital anomaly syndrome

In research: Pierre Robin sequence-faciodigital anomaly syndrome appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Pierre Robin sequence-faciodigital anomaly syndrome in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Pierre Robin sequence-faciodigital anomaly syndrome is common in secondary-school and first-year university syllabi. It links to neighbouring topics Genetic syndromes, X-linked recessive disorders, so understanding it makes those chapters shorter.
In everyday life: Look for Pierre Robin sequence-faciodigital anomaly syndrome outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Pierre Robin sequence-faciodigital anomaly syndrome” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Pierre Robin sequence-faciodigital anomaly syndrome in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Pierre Robin sequence-faciodigital anomaly syndrome means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Pierre Robin sequence-faciodigital anomaly syndrome out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Pierre Robin sequence-faciodigital anomaly syndrome in simple terms?

Why does Pierre Robin sequence-faciodigital anomaly syndrome matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Pierre Robin sequence-faciodigital anomaly syndrome?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Pierre Robin sequence-faciodigital anomaly syndrome.