**Question:** Following diagram indicates what type of inheritance:

A. Autosomal Recessive
B. Autosomal Dominant
C. X-linked Recessive
D. X-linked Dominant

**Core Concept:** The given diagram represents a simplified Mendelian Punnett square, which is used to predict the genotypes and phenotypes of offspring in a simple Mendelian inheritance pattern.

**Why the Correct Answer is Right:**

Autosomal Recessive (A) is the correct answer as the genotype of parents in the diagram are AA (homozygous for the dominant allele) and aa (homozygous for the recessive allele). In this case, all offspring will have the recessive phenotype (homozygous for the recessive allele) and will be affected.

**Why Each Wrong Option is Incorrect:**

- Autosomal Dominant (B): The genotype of parents in this case would be Aa (heterozygous for the dominant allele), and the offspring would have the dominant phenotype (heterozygous for the dominant allele). None of the offspring would be affected.

- X-linked Recessive (C): The correct answer is not X-linked Recessive because the parents are homozygous for the dominant allele (AA), and all offspring would be affected.

- X-linked Dominant (D): This is also incorrect because the parents are homozygous for the recessive allele (aa), and the offspring would have the recessive phenotype (homozygous for the recessive allele) and will be affected.

**Clinical Pearl:** Understanding Mendelian inheritance patterns is important for genetic counseling and predicting the risk of certain disorders in offspring. A detailed discussion about the inheritance pattern and its implications can help doctors guide patients and families regarding the chances of inheriting a genetic disorder.

**Correct Answer:** C. X-linked Recessive

**Explanation:** The correct answer is X-linked Recessive because the parents in the diagram are homozygous for the recessive allele (AA). In this case, all offspring will inherit the X-linked recessive allele from their parents and will be affected by the disorder.