What does it mean that one pair of genes segregates independently of another pair?

This statement refers to Mendel’s Law of Independent Assortment.

Explanation:

It means that the alleles of one gene pair separate (segregate) into gametes independently of the alleles of another gene pair.

Key Concept:

• During gamete formation (meiosis), each pair of alleles behaves independently
• The inheritance of one trait does not affect the inheritance of another trait (if genes are unlinked)

Example:

Consider two traits:

• Seed shape: Round (R) and Wrinkled (r)
• Seed color: Yellow (Y) and Green (y)

A plant with genotype RrYy can produce gametes:

• RY, Ry, rY, ry

Each combination occurs independently.

Important Condition:

• This law is valid when genes are located on different chromosomes or are far apart on the same chromosome

Conclusion:

Independent segregation means that different gene pairs assort separately during gamete formation, leading to genetic variation.