In a coupling configuration, which alleles are located on the same chromosome?

In a coupling configuration, the alleles that are located on the same chromosome are typically both dominant alleles. This means that when two genes are inherited together, they exist on the same homologous chromosome and both exhibit dominant traits.

This arrangement is significant in genetics because it indicates that there is a tendency for these alleles to be transmitted together to the offspring, which can affect the expression of traits. In populations, coupling can lead to the amplification of dominant traits, particularly if the dominant alleles are advantageous in the given environment.

Understanding the coupling effect is also pivotal in studies of linkage, as it helps in predicting the probabilities of inheritance patterns when crossing individuals with known genotype configurations.