Okay, let's tackle this question about the inheritance pattern of Tuberous Sclerosis. The user provided the correct answer as being autosomal dominant. First, I need to make sure I understand the core concept here. Tuberous Sclerosis Complex (TSC) is a genetic disorder characterized by the growth of benign tumors in various organs. The inheritance pattern is a key point here.

Core Concept: Tuberous Sclerosis is an autosomal dominant disorder. This means that only one copy of the mutated gene is sufficient to cause the disease. The genes involved are TSC1 on chromosome 9 and TSC2 on chromosome 16. These genes are tumor suppressor genes, so mutations lead to loss of function and uncontrolled cell growth.

Now, the correct answer is autosomal dominant. The explanation should mention that each child of an affected parent has a 50% chance of inheriting the mutation. Also, some cases are due to de novo mutations, so not all affected individuals have a family history. The TSC1 and TSC2 genes are important to name here.

For the incorrect options, the other choices might be autosomal recessive, X-linked, or mitochondrial. Each of these is wrong because TSC is not recessive, it doesn't follow X-linked inheritance (since both males and females are equally affected), and mitochondrial inheritance is unrelated here.

Clinical pearl: Remember that in autosomal dominant disorders, the presence of the mutation in one parent leads to a 50% risk for each offspring. Also, TSC is a classic example where de novo mutations are common, so even if there's no family history, a person can still have the condition.

I need to structure the answer with all the required sections, making sure each part is concise. Let me check the character count to stay within limits. Also, use bold for key terms and avoid markdown headings. Alright, putting it all together now.

**Core Concept**
Tuberous Sclerosis Complex (TSC) is an **autosomal dominant** genetic disorder caused by mutations in **TSC1** (chromosome 9) or **TSC2** (chromosome 16) tumor suppressor genes. These genes regulate cell growth via the mTOR pathway; their dysfunction leads to benign tumor formation in multiple organs.

**Why the Correct Answer is Right**
TSC follows **autosomal dominant inheritance**, meaning a single mutated allele from one parent is sufficient to cause disease. Approximately 60-70% of cases arise from **de novo mutations**, explaining the absence of family history in many patients. Affected individuals have a 50% chance of passing the mutation to offspring. The TSC1 and TSC2 proteins form a complex that inhibits mTOR signaling; loss of this inhibition drives uncontrolled cell proliferation.

**Why Each Wrong Option is Incorrect**
**Option A:** *Autosomal recessive* is incorrect. TSC does not require two mutated alleles—only one is sufficient to cause disease.
**Option B:** *X-linked* is incorrect. TSC affects males and females equally and is not linked to the X chromosome.
**Option C:** *Mitochondrial* is incorrect. Mitochondrial inheritance involves maternal transmission and is unrelated to TSC.

**Clinical Pearl / High-Yield Fact**
Remember the **"TSC triplet"** for diagnosis:

✓ Correct Answer: A. Autosomal dominant