- 01MENDEL’S PRINCIPLES OF HEREDITY
Experiments on Plant Hybridization
Foundational laws of inheritance.
12Chapters
67Lessons
134Topics
Certificate of completion included
This course was produced by Cavua from a public-domain text.
Skills this course leaves you with.
- Explain Mendel’s core principles of heredity and how they emerged from plant breeding experiments
- Interpret dominant and recessive traits using pea and Hieracium hybridization examples
- Analyze the segregation of hybrid offspring across successive generations
- Describe the role of gametes, allelomorphs, and pure lines in inheritance
- Compare Mendelian inheritance with ancestral heredity and identify key exceptions
- Evaluate the historical significance of Mendel’s work and Bateson’s defense of it
Curriculum
The full table of contents.
Every chapter, every lesson, every topic — laid out before you enroll. Click any chapter to expand it.
- Chapters
- 12
- Lessons
- 67
- Topics
- 134
- 01CAMBRIDGE UNIVERSITY PRESS WAREHOUSE, AVE MARIA LANE,
- 01GREGOR MENDEL
- 01A DEFENCE · W. BATESON, M.A., F.R.S. WITH A TRANSLATION OF MENDEL’S ORIGINAL · PAPERS ON HYBRIDISATION. CAMBRIDGE:
- 01PRINTED BY J. AND C. F. CLAY, AT THE UNIVERSITY PRESS.
- 01Mendel’s rediscovery and the need to spread it
- 02Reply to Professor Weldon and the case for immediate publication
- 01The Problems of Heredity and Their Solution
- 02Mendel’s Experiments in Plant Hybridisation
- 03Mendel’s Experiments with Hieracium
- 04A Defence of Mendel’s Principles of Heredity
- 01Need for systematic study of heredity
- 02Limits of current knowledge of hereditary mechanisms
- 01Statistical laws of heredity
- 02Galton’s studies of stature and Basset hounds
- 01Galton’s law of heredity and its limits
- 02de Vries’s experiments on discontinuous variation
- 03Mendel’s experiments on Pisum sativum
- 01Dominant and recessive characters in pea crosses
- 01Segregation of dominant, cross-bred, and recessive offspring
- 02Dihybrid crosses and the 9:3:3:1 ratio
- 03Why Mendel's law was overlooked
- 01Experimental confirmations of Mendel’s law
- 02Purity of germ-cells and inheritance
- 01Choosing simple experimental subjects
- 02Ancestral heredity and alternative inheritance
- 03Pure-breeding and uniform offspring
- 04Dissimilar germ-cells and experimental outcomes
- 01Cross-breeding and blended inheritance
- 02Galton’s law of ancestral heredity
- 01Law of ancestral heredity and gamete assumptions
- 02Mendelian inheritance in pure varieties and heterozygotes
- 03Dominance, blending, and intermediate cross-bred characters
- 01Unit-characters, allelomorphs, and compound characters
- 01Analytical and synthetical variations
- 01Limits of Mendelian principles and exceptional cases
- 01Early botanical notes and later public roles
- 02First scientific references to Mendel's work
- 03Why Mendel's discovery was neglected
- 04Naudin, Bentham, and Wichura on heredity
- 01Rediscovery and significance of Mendel’s work
- 01Introductory Remarks
- 01Division of the experiments by contrasting pea characters
- 02Selected pea traits for hybridisation experiments
- 01Cross-fertilisation procedure and controls
- 02Dominant and recessive hybrid characters
- 03List of dominant traits in pea hybrids
- 04Variation in hybrid seed-coat spotting and seed-shape
- 01Segregation of dominant and recessive characters
- 02Experimental ratios across seed, pod, flower, and stem traits
- 03Variation within pods and individual plants
- 04Average 3:1 ratio and meaning of dominant characters
- 05Beginning of the second generation
- 01The Second Generation [Bred] from the Hybrids
- 01The Subsequent Generations [Bred] from the Hybrids
- 01The offspring of hybrids in which several differentiating characters are associated
- 01The reproductive cells of hybrids
- 01Experiments with hybrids of other species of plants
- 01Phaseolus nanus × Phaseolus multiflorus hybrid colour variation
- 02Cultivated plant variability and hybrid colour series
- 03Concluding remarks on Mendel's hybrid observations
- 01Hybrid offspring and reversion to parent types
- 02Limits of judging hybrid resemblance
- 03Constant hybrids as new species
- 04Cellular explanation of hybrid variability
- 01Hypothesis on hybrid development and cell elements
- 02Transformation of one species into another by artificial fertilisation
- 03Asymmetry in transformation experiments and species stability
- 01Preliminary remarks on the genus Hieracium
- 01Hybridisation and the origin of intermediate forms
- 02Structure of the hybrids
- 03Fertility, self-fertilisation, and offspring
- 01Comparison with Pisum hybrids
- 02Stable Hieracium hybrid posterity
- 03Polymorphism in Salix and Hieracium
- 01Mendel’s law and the limits of ancestral heredity
- 02Critique of Weldon’s restatement of Mendel
- 03Saunders and Bateson’s reply to Weldon
- 01Critique of the title and scope of Mendel’s laws
- 02Galton-Pearson law of ancestral heredity
- 03Mendelian purity of germ-cells versus ancestral heredity
- 01Alternative inheritance and discontinuous variation
- 02Mendel’s principle and gametic purity
- 03The critic’s version of dominance
- 01Dominance in peas and Mendel’s law
- 02Cotyledon-colour and seed-coat colour
- 03Round and wrinkled seed shape
- 01Seed shape, dimorphism, and multiple allelomorphs
- 02Exceptional variation and recurring sports in peas
- 03Mendelian interpretation of variability
- 01Mendel’s laws and variability
- 02Cross-bred seed characters in first crosses
- 03Exceptional results and causes of variation
- 01Analysis of exceptions
- 02The mule or heterozygote
- 01The hybrid-character of the mule form
- 01Dominance is not universally regular
- 02Professor Weldon’s evidence on cotyledon colour and xenia
- 01Gärtner’s pea-crossing cases and xenia ambiguity
- 01Gärtner’s seed-coat observations
- 02Seton’s pea-cross case
- 01Buchsbaum, Telephone, and Couturier cases
- 01Seed-coat colour and dominance in pea crosses
- 01Rimpau’s cases of wrinkled and round peas
- 01Grey peas and seed-shape dominance
- 02First-cross observations in grey and sugar peas
- 01Knight’s pea-cross experiments
- 01Laxton’s cross-bred pea experiment
- 02Interpretation of pea heredity under Mendel’s principles
- 01Maternal seed-form and Telephone peas
- 02Stocks and flower-colour crosses
- 03Datura and Mendelian inheritance
- 04Rats, mice, and von Fischer's claims
- 01Weldon’s quotations from Laxton
- 01VI. The Argument Built on Exceptions
- 01Ancestry and Dominance
- 01Ancestry and purity of germ-cells
- 01The value of the appeal to Ancestry
- 01The appeal to ancestry
- 01Absolute purity of germ-cells
- 01Analytical breeding and reappearance of components
- 02Closing defence of Mendel’s principles
- 01Bibliography of hybridization and heredity studies
- 02Received as this sheet goes to press
- 03Notes on Weldon, Pearson, and Mendelian interpretation
- 04Pea characters, xenia, and reciprocal crosses
- 01Recessive flower colour and seed-coat colour
- 02Recessive seed-shape as a maternal character
- 01Critique of Laxton’s inheritance statements
- 02Masters, Haage and Schmidt, and other reported exceptions
- 01False hybridisations and seed-characters
- 02Separation and recombination of hypallelomorphs
- 03Exceptions to dominance and purity
- 01No universal dominance in eye-colour
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