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pangenesis    
泛生论; 机体再生说

泛生论; 机体再生说

Pangenesis \Pan*gen"e*sis\, n. [Pan- genesis.] (Biol.)
An hypothesis advanced by Darwin in explanation of heredity.
[1913 Webster]

Note: The theory rests on the assumption, that the whole
organization, in the sense of every separate atom or
unit, reproduces itself, the cells throwing off minute
granules called gemmules, which circulate freely
throughout the system and multiply by subdivision.
These gemmules collect in the reproductive organs and
products, or in buds, so that the egg or bud contains
gemmules from all parts of the parent or parents, which
in development give rise to cells in the offspring
similar to those from which they were given off in the
parent. The hypothesis also assumes that these gemmules
need not in all cases develop into cells, but may lie
dormant, and be transmitted from generation to
generation without producing a noticeable effect until
a case of atavism occurs. This is an ingenious
hypothesis, but now known to be wrong. Although now, a
hundred years later, we know that all transmitted
genetic information (other than that in plasmids) is
contained in the genome of a single cell, scientists
are still only beginning to understand the development
process.
[1913 Webster PJC]


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  • Pangenesis - Wikipedia
    Pangenesis was Charles Darwin 's hypothetical mechanism for heredity, in which he proposed that each part of the body continually emitted its own type of small organic particles called gemmules that aggregated in the gonads, contributing heritable information to the gametes [1]
  • Charles Darwins Theory of Pangenesis - The Embryo Project Encyclopedia
    In 1868 in England, Charles Darwin proposed his pangenesis theory to describe the units of inheritance between parents and offspring and the processes by which those units control development in offspring
  • Pangenesis | scientific theory | Britannica
    He postulated that all organs of the body of a parent gave off invisible “seeds,” which were like miniaturized building components and were transmitted during sexual intercourse, reassembling themselves in the mother’s womb to form a baby This hypothesis he called pangenesis
  • PANGENESIS Definition Meaning - Merriam-Webster
    The meaning of PANGENESIS is a disproven hypothetical mechanism of heredity in which the cells throw off particles that collect in the reproductive products or in buds so that the egg or bud contains particles from all parts of the parent
  • Pangenesis Explained
    Darwin's pangenesis theory attempted to explain the process of sexual reproduction, inheritance of traits, and complex developmental phenomena such as cellular regeneration in a unified mechanistic structure
  • The History and Reception of Charles Darwins Hypothesis of Pangenesis
    First published in The Variation of Animals and Plants under Domestication (1868), pangenesis stated that inheritance can be explained by sub-cellular "gemmules" which aggregated in the sexual organs during intercourse
  • The genesis of pangenesis | Lines of thought
    Darwin’s theory of how characteristics could be passed from generation to generation – pangenesis – was published in 1868 He recognised that it was speculative, but published it as a contribution to debate
  • Pangenesis - an overview | ScienceDirect Topics
    Pangenesis is defined as a theory proposed by Charles Darwin, suggesting that every part of the body sheds particles called gemmules, which are influenced by environmental factors and can be transmitted to germ cells, facilitating the inheritance of acquired characteristics across generations
  • Pangenesis Theory of Evolution in Anthropology | Anthroholic
    With the term Pangenesis, Darwin wanted to put forth the idea that each part of parents could be significant in contributing to the growth, development and evolution of the offspring [1] He proposed this theory in 1868 in England
  • Pangenesis Definition and Examples - Biology Online Dictionary
    Pangenesis Definition noun A hypothetical mechanism for heredity proposed by Charles Darwin in which it holds that gemmules are shed by the body cells and carried in the bloodstream to the gonads where they accumulate within the reproductive cell (e g egg cell) prior to fertilization





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