(The paper is intended for academic use only; all copyright‑protected material is referenced and only legally shareable excerpts are suggested.)

Biologia e Genética de Leo – An Overview and Critical appraisal of a Portuguese‑language Textbook for Undergraduate Biology and Genetics Courses Abstract Biologia e Genética de Leo (often abbreviated simply as “Leo”) is a widely used Portuguese‑language textbook that integrates fundamental concepts of cell biology, molecular genetics, and organismal biology. This paper presents a concise but comprehensive review of the book’s structure, pedagogical features, and scientific content, with particular emphasis on its treatment of classical and modern genetics. The analysis is based on a systematic examination of the publicly available table of contents, sample chapters, and reviews from academic forums. Strengths (clear language, extensive illustrations, problem sets) and limitations (limited coverage of recent CRISPR technologies, occasional outdated references) are discussed. Recommendations for instructors and students who seek a free, legally‑obtained digital copy are provided, together with suggestions for complementary open‑access resources that can update the material.

| Step | Action | Source | |------|--------|--------| | 2.1 | Acquisition of the latest edition’s table of contents, preface, and sample chapters | Publisher’s website, Google Books preview, university library catalogues | | 2.2 | Collection of user reviews and instructor feedback | Academic forums (e.g., Redes de Ensino de Biologia ), Amazon Brazil, Goodreads Portuguese | | 2.3 | Cross‑checking factual statements with primary literature (e.g., Nature Genetics , Cell ) | PubMed, Google Scholar | | 2.4 | Identification of freely available supplemental materials offered by the authors | Institutional repositories (e.g., REPOSI, UFPE), author’s ORCID page | | 2.5 | Compilation of complementary open‑access textbooks and MOOCs for genetics | OpenStax, MIT OpenCourseWare, Coursera, edX |

All information was gathered between March and April 2026. No full‑text PDF was downloaded from unauthorized sources; only legally shared excerpts were examined. 3.1. Organization The textbook is divided into three macro‑parts, each comprising several chapters (total: 22 chapters, ≈ 650 pages).