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Experiments which in previous years were made with ornamental
plants have already afforded evidence that the hybrids, as a rule,
are not exactly intermediate between the parental species. With
some of the more striking characters, those, for instance, which
relate to the form and size of the leaves, the pubescence of the
several parts, etc., the intermediate, indeed, is nearly always to
be seen; in other cases, however, one of the two parental
characters is so preponderant that it is difficult, or quite
impossible, to detect the other in the hybrid. from 4. The Forms of
the Hybrid One of the most influential and important scientific
works ever written, the 1865 paper Experiments in Plant
Hybridisation was all but ignored in its day, and its author,
Austrian priest and scientist GREGOR JOHANN MENDEL (18221884), died
before seeing the dramatic long-term impact of his work, which was
rediscovered at the turn of the 20th century and is now considered
foundational to modern genetics. A simple, eloquent description of
his 18561863 study of the inheritance of traits in pea plantsMendel
analyzed 29,000 of themthis is essential reading for biology
students and readers of science history. Cosimo presents this
compact edition from the 1909 translation by British geneticist
WILLIAM BATESON (18611926).
Das historische Buch konnen zahlreiche Rechtschreibfehler, fehlende
Texte, Bilder, oder einen Index. Kaufer konnen eine kostenlose
gescannte Kopie des Originals (ohne Tippfehler) durch den Verlag.
Nicht dargestellt. 1901 Auszug: ... 60 runde gelbe und kantige
gelbe Samen.. AaB 138 runde gelbe und grune, kantige gelbe und
grune Samen Aa Bb Von den kantigen gelben Samen kamen 96 Pflanzen
zur Fruchtbildung, wovon 28 nur kantige gelbe Samen hatten.... aB
68 kantige, gelbe und grune Samen.... aBb Von 108 runden grunen
Samen brachten 102 Pflanzen Fruchte, davon hatten: 35 nur runde
grune Samen Ab 67 runde und kantige grune Samen.... Aab Die
kantigen grunen Samen gaben 30 Pflanzen mit durchaus gleichen
Samen; sie blieben constant.... ab Die Nachkommen der Hybriden
erscheinen demnach unter 9 verschiedenen Formen und zum Theile in
sehr ungleicher Anzahl. Man erhalt, wenn dieselben zusammengestellt
und geordnet werden: 38 Pflanzen mit der Bezeichnung AB Sammtliche
Formen lassen sich in drei wesentlich verschiedene Abtheilungen
bringen. Die erste umfasst jene mit der Bezeichnung AB, Ab, aB, ab;
sie besitzen nur constante Merkmale und anderu sich in den nachsten
Generationen nicht mehr. Jede dieser Formen ist durchschnittlich 33
Mal vertreten. Die zweite Gruppe enthalt die Formen ABb, aBb, AaB,
Aab; diese sind in einem Merkmale constant, in dem anderen hybrid,
und variiren in der nachsten Generation nur hinsichtlich des
hybriden Merkmales. Jede davon erscheint im Durchschnitte 65 Mal.
Die Form AaBb kommt 138 Mal vor, ist in beiden Merkmalen hybrid,
und verhalt sich genau so, wie die Hybride, von der sie abstammt.
Vergleicht man die Anzahl, in welcher die Formen dieser
Abtheilungen vorkommen, so sind die Durchschnittsverhaltnisse 1:2:4
nicht zu verkennen. Die Zahlen 33, 65, 138 geben ganz gunstige
Annaherungswerthe an die Verhaltnisszahlen 33, 66, 132. Die
Entwicklungsreihe be...
Mendel's groundbreaking paper, which laid the foundation for
further research upon heritage and genetics, is published here
complete with the original illustrations and charts. When Mendel
released this paper in 1865, it was after years of rigorous study
and comparison in plant specimens and their offspring. His
conclusion that variant traits were hereditary and could be
determined, with a good degree of accuracy, through probability
analysis were revolutionary in natural science at the time.
Mendel's assertions regarding acquired characteristics,
demonstrated through the comparison of peas and their seeds, would
spark great interest in the nature and mechanisms behind heredity
between generations of organisms. Seeking to gain high quality
results, Mendel prefaces his explanations by noting that he
artificially fertilized the plants described in the work.
Mendel's groundbreaking paper, which laid the foundation for
further research upon heritage and genetics, is published here
complete with the original illustrations and charts. When Mendel
released this paper in 1865, it was after years of rigorous study
and comparison in plant specimens and their offspring. His
conclusion that variant traits were hereditary and could be
determined, with a good degree of accuracy, through probability
analysis were revolutionary in natural science at the time.
Mendel's assertions regarding acquired characteristics,
demonstrated through the comparison of peas and their seeds, would
spark great interest in the nature and mechanisms behind heredity
between generations of organisms. Seeking to gain high quality
results, Mendel prefaces his explanations by noting that he
artificially fertilized the plants described in the work.
William Bateson (1861 1926) began his academic career working on
variation in animals in the light of evolutionary theory. He was
inspired by the rediscovery in 1900 of the 1860s work on plant
hybridisation by the Austrian monk Gregor Mendel (included here as
an appendix) to pursue further experimental work in what he named
'genetics'. He realised that Mendel's results could help to solve
difficult biological questions and controversies and to challenge
the status quo in evolutionary studies. Annoyed by the 'apathetic'
stance of his evolutionist colleagues, and incensed by a scathing
critique of Mendel by the Oxford professor Raphael Weldon, Bateson
incorporated an English translation of Mendel's work into this 1902
book along with a defence of Mendel's statistical experiments and
the principles of heredity derived from them. His book is an
impassioned appeal for scientists to adopt this 'brilliant method'
which he felt could revolutionise both scholarship and industry.
One of the most influential and important scientific works ever
written, the 1865 paper "Experiments in Plant Hybridisation" was
all but ignored in its day, and its author, Austrian priest and
scientist Gregor Johann Mendel (1822-1884), died before seeing the
dramatic long-term impact of his work, which was rediscovered at
the turn of the 20th century and is now considered foundational to
modern genetics. A simple, eloquent description of his 1856-1863
study of the inheritance of traits in pea plants-Mendel analyzed
29,000 of them-this is essential reading for biology students and
readers of science history.
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