## **Core Concept**
Atavism refers to the phenomenon where a child exhibits characteristics or traits that are not present in their parents but are found in more remote ancestors. This concept is rooted in genetics and evolutionary biology.

## **Why the Correct Answer is Right**
Atavism occurs when a genetic trait that has been dormant or skipped in the parents reappears in the offspring due to the inheritance of recessive genes from more distant ancestors. This means the child resembles a great-grandparent or another ancestor more than the parents. The correct answer relates to this definition.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option does not relate to the definition of atavism.
- **Option B:** This option does not accurately describe atavism; it seems to imply resemblance to parents or siblings.
- **Option C:** This option does not accurately describe atavism; it seems unrelated to the concept.

## **Clinical Pearl / High-Yield Fact**
A classic example of atavism is the reappearance of a polydactyly (extra fingers or toes) in a child whose parents do not have the condition but have ancestors who did. This phenomenon illustrates how genetic traits can skip generations.

## **Correct Answer:** .