Which of the following will not result in variations among siblings ?

Options

A. Independent assortment of genes
B. Crossing over
C. Linkage
D. Mutation

Explanation

To determine which of the following options will not result in variations among siblings, we need to analyze each option provided:

1. **Independent Assortment of Genes**: This principle states that alleles for different traits segregate independently of one another during gamete formation. This means that siblings can inherit different combinations of alleles, leading to genetic variation. Therefore, this option does result in variations among siblings.

2. **Crossing Over**: This process occurs during meiosis when homologous chromosomes exchange segments of genetic material. This exchange increases genetic diversity by producing new combinations of alleles in the gametes. Thus, crossing over also results in variations among siblings.

3. **Linkage**: Linkage refers to the tendency of genes that are located close to each other on the same chromosome to be inherited together. Because linked genes do not assort independently, they do not contribute to genetic variation among siblings as much as unlinked genes do. Therefore, linkage does not result in variations among siblings.

4. **Mutation**: A mutation is a change in the DNA sequence that can lead to new traits. Mutations can introduce new genetic variations into a population, including among siblings. Hence, mutations do result in variations among siblings.

Based on this analysis, the option that does not result in variations among siblings is:

**Correct Answer: Linkage (Option C)**