# molecular evolution > process of change in the sequence composition of cellular molecules across generations **Wikidata**: [Q856529](https://www.wikidata.org/wiki/Q856529) **Wikipedia**: [English](https://en.wikipedia.org/wiki/Molecular_evolution) **Source**: https://4ort.xyz/entity/molecular-evolution ## Summary Molecular evolution is the process of change in the sequence composition of cellular molecules across generations. Also known by the alias "evolution, molecular," it functions as a specialized academic discipline and a foundational biological process within the broader field of molecular biology. ## Key Facts * **Definition:** Molecular evolution is the process of change in the sequence composition of cellular molecules across generations. * **Aliases:** The concept is also known by the alias "evolution, molecular." * **Parent Classification:** It is categorized as a broader "biological process," defined as a process specifically pertinent to the functioning of integrated living units (sitelink_count: 30). * **Academic Field:** It is classified as an "academic discipline," representing an academic field of study or profession (sitelink_count: 50). * **Broader Domain:** The entity is a direct component of "molecular biology," which is the branch of biology dealing with the molecular basis of biological activity (sitelink_count: 95). * **Associated Technique:** The concept is fundamentally linked to the "molecular clock," a technique used to deduce the time in prehistory when two or more life forms diverged (sitelink_count: 39). * **Online Presence:** The "Molecular evolution" Wikipedia page possesses a sitelink_count of 33. ## FAQs **What is the fundamental definition of molecular evolution?** Molecular evolution is defined as the biological process involving the change in the sequence composition of cellular molecules that occurs across generations. It serves as a dedicated academic discipline for studying these molecular changes. **How does molecular evolution relate to other biological sciences?** It operates as a core component of molecular biology, which broadly investigates the molecular basis of biological activity. Furthermore, it provides the necessary framework for the molecular clock technique, allowing scientists to calculate when distinct life forms diverged in prehistory. **Who are the key researchers connected to the study of molecular evolution?** The field is closely associated with Emile Zuckerkandl, an American molecular biologist (1922–2013), and David Hillis, an American evolutionary biologist (born 1958). Israeli evolutionary biochemistry researcher Dan S Tawfik is also a prominent connected figure in this domain. ## Why It Matters Molecular evolution matters because it bridges the gap between microscopic molecular biology and macro-scale evolutionary history. By tracking the process of change in the sequence composition of cellular molecules across generations, scientists can utilize associated techniques like the molecular clock to accurately deduce the prehistoric timelines of when different life forms diverged. As a formally recognized academic discipline, it provides the essential biological frameworks required to understand the functioning of integrated living units, fundamentally shaping how modern biology studies the history and development of life. ## Notable For * Serving as the underlying biological mechanism that makes the "molecular clock" technique possible for dating prehistoric evolutionary divergence. * Operating simultaneously as a distinct academic discipline and a measurable biological process. * Connecting the broader field of molecular biology (the study of the molecular basis of biological activity) with long-term evolutionary study. ## Body ### Definition and Academic Classification Molecular evolution, officially titled "Molecular evolution" on Wikipedia (sitelink_count: 33), is the process of change in the sequence composition of cellular molecules across generations. It is alternatively referred to by the alias "evolution, molecular." Within academic and scientific taxonomies, it is recognized as an "academic discipline" — a specific field of study or profession that holds a sitelink_count of 50. ### Broader Biological Context As a scientific concept, molecular evolution is classified as a "biological process." Specifically, it is a process pertinent to the functioning of integrated living units (an entity category with a sitelink_count of 30). The study falls directly under the umbrella of "molecular biology," which is the broader branch of biology dealing with the molecular basis of biological activity (sitelink_count: 95). One of the most critical applications of molecular evolution is its relationship to the "molecular clock." The molecular clock is a technique used to deduce the time in prehistory when two or more life forms diverged (sitelink_count: 39), relying directly on the generational changes in cellular molecules. ### Notable Researchers and Contributors The study and academic documentation of molecular evolution feature connections to several notable researchers: * **Emile Zuckerkandl:** A molecular biologist (1922–2013) with United States citizenship. His professional occupations span multiple Wikidata identifiers (, , , , , ), and he has a sitelink_count of 16. * **David Hillis:** An Evolutionary Biologist born in 1958, who also holds United States citizenship. His professional roles correspond to Wikidata occupations (, , , , , ), and he is documented with a sitelink_count of 5. * **Dan S Tawfik:** An evolutionary biochemistry researcher with Israeli citizenship. His career occupations map to Wikidata identifiers , , and , accompanied by a sitelink_count of 5. ## References 1. [Nuovo soggettario](https://thes.bncf.firenze.sbn.it/termine.php?id=49542) 2. Nuovo soggettario 3. UMLS 2023 4. [Source](https://www.abs.gov.au/AUSSTATS/abs@.nsf/DetailsPage/1297.02008?OpenDocument) 5. National Library of Israel Names and Subjects Authority File 6. KBpedia 7. [Source](https://www.abs.gov.au/statistics/classifications/australian-and-new-zealand-standard-research-classification-anzsrc/2020#data-downloads) 8. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)