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Pangenesis
Pangenesis Pan*gen"e*sis, n. [Pan- + genesis.] (Biol.)
An hypothesis advanced by Darwin in explanation of heredity.
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.
Meaning of Pangenesis from wikipedia
-
theory of
pangenesis itself first appeared in Darwin's
notebooks in 1841. In 1861, the
Irish physician Henry Freke developed a
variant of
pangenesis in his...
-
yield pink-flowered offspring.
Charles Darwin's
theory of
inheritance by
pangenesis, with
contributions to egg or
sperm from
every part of the body, implied...
-
effects of use and disuse, as
Lamarck had done, and his own
concept of
pangenesis similarly implied soft inheritance. Many
researchers from the 1860s onwards...
- mystery.
Towards this end,
Darwin developed his
provisional theory of
pangenesis. In 1865,
Gregor Mendel reported that
traits were
inherited in a predictable...
- into
heredity which led him to
challenge Charles Darwin's
hypothesis of
pangenesis.
Darwin had
proposed as part of this
model that
certain particles, which...
- own
theory of heredity,
pangenesis, did not meet with any
large degree of acceptance. A more
mathematical version of
pangenesis, one
which dropped much...
- much like to hear what you
think of '
Pangenesis'." Few of Darwin's
colleagues shared his
enthusiasm for
pangenesis.
Wallace was
initially supportive and...
-
inheritance Pangenesis – Darwin's
proposed mechanism for
heredity Geison, G. L. (1969). "Darwin and heredity: The
evolution of his
hypothesis of
pangenesis". J...
- a mix of
blending inheritance and the
inheritance of
acquired traits (
pangenesis).
Blending inheritance would lead to
uniformity across po****tions in...
- offspring.
Charles Darwin developed a
theory of
inheritance he
termed pangenesis, from Gr**** pan ("all, whole") and
genesis ("birth") /
genos ("origin")...
