How molecular clocks are useful in investigating phylogeny in ways that morphological characteristics are not?

Molecular clocks provide a quantitative method to estimate the timing of evolutionary events by analyzing genetic mutations, which occur at relatively constant rates over time. This approach allows researchers to construct phylogenetic trees that reflect evolutionary relationships based on genetic data rather than relying solely on morphological traits, which can be influenced by environmental factors and convergent evolution. Additionally, molecular data can reveal relationships among species that are not evident through morphology, especially in cases where physical characteristics are similar due to adaptation rather than common ancestry. Overall, molecular clocks enhance the accuracy and resolution of phylogenetic studies.