The cell in development and heredity / by Edmund B. Wilson.

  • Wilson, Edmund B. (Edmund Beecher), 1856-1939.
Date:
1925
Catalogue details

Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: The cell in development and heredity / by Edmund B. Wilson. Source: Wellcome Collection.

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    xviii TABLE OF CONTENTS page B. Union of the Gametes 404 1. General Conditions of Fertilization . . . . . ' . 404 2. Approach of Egg and Sperm . . . . . . . . . 405 3. Reaction of the Egg. Entrance of the Sperm . 409 4. Monospermy, Dispermy, and Polyspermy 416 C. History of the Pronuclei 422 1. General 422 2. Movements of the Pronuclei 422 3. Conjugation of the Pronuclei. General History of the Chromosomes . 426 D. The Cytoplasmic Structures 434 1. The Acrosome . ' . . 435 2. The Chondriosomes . . 435 3. The Central Bodies and Cleavage-Amphiaster . . . 438 4. Boveri's Theory of Fertilization . 440 II. Fertilization in Plants 449 III. Transitional Conditions 458 1. Partial Fertilization . . . . 458 2. Gynogenesis . . . . . 460 3. Androgenesis . . . . . .. 464 4. Merogony 465 5. Summary . . . . , 466 IV. Parthenogenesis . . . ' . . 467 1. Natural Parthenogenesis . 467 2. Artificial Parthenogenesis 472 Literature V . . . 486 CHAPTER VI Maturation and Reduction. Meiosis Introduction . ' . . . • 488 I. General Survey . 488 II. External Aspects of Meiosis . . . . 492 1. In Animals 492 2. In Plants . 496 III. Internal Phenomena of Meiosis ... . . . . . 498 A. Introduction . . . 498 1. Historical and Theoretical ... 498 2. Preliminary Outline 503 3. General Characteristics of the Divisions 508 B. The Heterotypic Division . ........ 511 Introductory . . SII 1. The Heterotypic Chromosomes. Forms and Spindle-Attachments 511 2. Course of the Division 515 C. The Interkinesis and the Homeotypic Division 532 D. The Growth-Period of the Auxocytes 535 Introductory 535 1. Outline of the-Stages 536 2. General Result 548