Bibliometric data used for devising the citation-based metrics in the ranking were collected on January 12, 2026. The position of each scientist in the ranking is determined by their D-index (Discipline H-index), a metric that exclusively considers papers and citation metrics within the specific discipline of Genetics, thereby ensuring a focused and discipline-relevant evaluation.
Scope of Research and Inclusion Criteria
The ranking methodology entailed a detailed examination of 187,823 scientist profiles aggregated from diverse bibliometric data sources spanning all scientific disciplines. Within this dataset, 3,000 scientists active in Genetics were identified for further scrutiny. To qualify for inclusion in the Genetics ranking, scientists were required to meet a minimum D-index threshold of 40. In addition, a majority of their tier publications needed to be centered in the area of Genetics, underscoring their primary research commitment to the field.
Beyond quantitative metrics, a scientist’s awards and notable achievements specific to Genetics were also considered in the evaluation. The D-index thresholds used to identify top researchers are adjusted in increments of 10 relative to the estimated total number of scholars within each discipline, ensuring that the ranking represents the top 1% of leading experts. Furthermore, a proximity criterion was imposed whereby the difference between a scientist’s overall H-index and their discipline-specific D-index must not exceed 30%, enhancing the precision of disciplinary focus.
Verification and Methodological Rigor
The Research.com team understands that raw bibliometric data alone cannot serve as an absolute measure of a scholar’s output or impact. Therefore, extensive manual verification was conducted for all scientist profiles included in the ranking. This verification process involved cross-correlation against publications indexed in a wide array of trustworthy and authoritative sources to validate accuracy and authenticity.
While the number of papers published in prominent journals and conference proceedings does not directly influence a researcher’s ranking position, it serves as an important secondary indicator of scientific contribution within the field. The primary position in the ranking is calculated based on each researcher’s D-index, leveraging the curated data from OpenAlex and CrossRef—two of the most prominent and well-regarded bibliometric databases accessible to the global research community.
For a detailed overview of the methodology underpinning this ranking, readers are encouraged to visit our methodology page.
Research.com’s Mission and Purpose
At Research.com, our mission is to inspire researchers, industry leaders, and policymakers worldwide to understand emerging trends and directions by examining where leading experts are making impactful contributions. This ranking endeavors to provide the scientific community at large with transparent, data-driven insights into who the foremost genetics researchers are, both within South Africa and globally, facilitating recognition at the level of specific disciplines, countries, and institutions.
Through meticulous data collection, verification, and a robust metric framework, we aim to empower academia and related stakeholders with credible resources that support informed decision-making, foster collaborations, and stimulate further excellence in scientific research.
