What does the law of independent assortment state?

• A. Genetic traits are inherited as a package
• B. Alleles for different traits segregate independently
• C. Genes are located on the same chromosome
• D. All alleles are inherited together

Answer: (B)

The law of independent assortment states that alleles for different traits segregate independently of one another during the formation of gametes. This principle, first described by Gregor Mendel through his experiments with pea plants, indicates that the inheritance of one trait does not influence the inheritance of another trait, as long as the genes for these traits are located on different chromosomes or are far enough apart on the same chromosome.

This law is significant because it contributes to genetic variation in a population, allowing for new combinations of traits to appear. During meiosis, homologous chromosomes align independently at the metaphase plate and segregate into gametes randomly, leading to a mix of maternal and paternal alleles in the offspring. This independent assortment helps explain why siblings from the same parents can have different combinations of traits.

The other statements do not accurately reflect the principles of inheritance as described by Mendel. The first option relates to the concept of linked genes, where traits are inherited together if they are located on the same chromosome. The third option incorrectly implies that all genes are located on the same chromosome, which is not true. The fourth statement also refers to linked inheritance, where alleles for traits are inherited together rather than being assorted independently.

Understanding the law of independent assortment