Law of segregation

Definition

The law of segregation states that during the formation of gametes, the alleles for a trait separate so that offspring acquire one allele from each parent. This principle was first articulated by Gregor Mendel based on his work with pea plants.

5 Must Know Facts For Your Next Test

1. 1. The law of segregation occurs during anaphase I of meiosis.
2. 2. It explains how pairs of gene variants are separated into reproductive cells.
3. 3. Each gamete receives only one allele from each pair.
4. 4. Mendel's experiments with monohybrid crosses provided evidence for this law.
5. 5. This principle is fundamental to understanding genetic inheritance and variation.

Review Questions

• 1. During which phase of meiosis does the segregation of alleles occur?
• 2. How did Mendel’s experiments with pea plants support the law of segregation?
• 3. What is the significance of each gamete receiving only one allele for each trait?

Related terms

Allele: Different versions of a gene that determine specific traits.

Monohybrid Cross: A genetic cross involving a single pair of genes, focusing on one characteristic.

Genotype: The genetic makeup of an organism in terms of its alleles or genes.