Mendel's Laws of Inheritance — NEET Biology
📚 Practice ConceptBased on his observations on monohybrid crosses Mendel proposed two general rules to consolidate his understanding of inheritance in monohybrid crosses. Today these rules are called the Principles or Laws of Inheritance: the First Law or Law of Dominance and the Second Law or Law of Segregation.
Match the following Mendelian Laws with their key principles/cytological bases and characteristic F₂ generation ratios, assuming complete dominance: Column I (Mendel's Law) A. Law of Dominance B. Law of Segregation C. Law of Independent Assortment Column II (Key Principle/Cytological Basis) 1. Segregation of homologous chromosomes during meiosis I 2. Independent alignment of non-homologous chromosome pairs at metaphase I 3. Expression of only one trait in a heterozygous individual Column III (Associated F₂ Ratio/Pattern) I. 1:2:1 genotypic ratio II. 3:1 phenotypic ratio III. 9:3:3:1 phenotypic ratio
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