Sally Durant Plummer, " blond, petite, sweet-faced " and at 49 " still remarkably like the girl she was thirty years ago ", a former Weismann girl is the first guest to arrive ; her ghostly youthful counterpart moves towards her.

Former Weismann performers at the reunion include Max and Stella Deems, who lost their radio jobs and became store owners in Miami ; Solange La Fitte, a coquette, who is still vibrant three decades later ; Hattie Walker, who has outlived five younger husbands ; Vincent and Vanessa, former dancers who now own an Arthur Murray franchise ; Heidi Schiller, for whom Franz Lehár once wrote a waltz ( or was it Oscar Straus?

The inheritance of acquired traits was shown to have little basis in the 1880s when August Weismann cut the tails off many generations of mice and found that their offspring continued to develop tails.

The significance of meiosis for reproduction and inheritance, however, was described only in 1890 by German biologist August Weismann, who noted that two cell divisions were necessary to transform one diploid cell into four haploid cells if the number of chromosomes had to be maintained.

The minority view of August Weismann, that natural selection was the only mechanism, was called neo-Darwinism.

As part of the disagreement about whether natural selection alone was sufficient to explain speciation, George Romanes coined the term neo-Darwinism to refer to the version of evolution advocated by Alfred Russel Wallace and August Weismann with its heavy dependence on natural selection.

Friedrich Leopold August Weismann ( 17 January 1834 – 5 November 1914 ) was a German evolutionary biologist.

Weismann's ideas preceded the rediscovery of Gregor Mendel's work, and though Weismann was cagey about accepting Mendelism, younger workers soon made the connection.

Weismann was born a son of high school teacher Johann ( Jean ) Konrad Weismann ( 1804 – 1880 ), a graduate of ancient languages and theology, and his wife Elise ( 1803 – 1850 ), née Lübbren, the daughter of the county councillor and mayor von Stade, on January 17, 1834 in Frankfurt am Main.

His son Julius Weismann ( 1879-1950 ) was a composer.

Prior to his career in philosophy and education with Dr Adler, Weismann was a consultant in the field of architecture, construction management and exhibit design and fabrication.

As part of the disagreement about whether natural selection alone was sufficient to explain speciation, George Romanes coined the term neo-Darwinism to refer to the version of evolution advocated by Alfred Russel Wallace and August Weismann with its heavy dependence on natural selection.

Weismann was translated into English, and though he was influential, it took many years for the full significance of his work to be appreciated.

Huxley was the most important biologist after August Weismann to insist on natural selection as the primary agent in evolution.

Lochner's case was argued by Henry Weismann ( who had been one of the foremost advocates of the Bakeshop Act when he was Secretary of the Journeymen Bakers ' Union ).

* An examination of Weismannism ( 1893 ) ( August Weismann was the leading evolutionary theoretician at the turn of the 19th century )

The gearbox is proprietary and was developed by Weismann.

A useful macroscopic model that combines an electric field with DLA was developed by Niemeyer, Pietronero, and Weismann in 1984, and is known as the dielectric breakdown model ( DBM ).

The thread was later picked up by August Weismann in 1889, who argued that the purpose of sex was to generate genetic variation, as is detailed in the majority of the explanations below.

Weismann successfully submitted two manuscripts, one about hippuric acid in herbivores, and one about the salt content of the Baltic Sea, and won two prizes.

Weismann believed that the initial division of the egg into two cells causes determinants to be divided into two groups, such that one cell will develop, say, the left half of the embryo, while the other cell will generate the right half.

Weismann ’ s developmental concept was based on a mistaken interpretation of an 1882 experiment carried about by Wilhelm Roux, in which Roux killed one of the cells of a frog embryo at the two-cell stage.

In 1889 Weismann wrote to acknowledge that " You have exposed in your paper an in idea which is in one essential point nearly allied to the main idea contained in my theory of the continuity of germ-plasm ".

Weismann became the Director of the Zoological Institute and the first Professor of Zoology at Freiburg.

The term germ plasm was first used by the German biologist August Weismann ( 1834 – 1914 ).

The " Alexanderlied " with German translation was first edited by Heinrich Weismann ( 2 vols., Frankfurt, 1850 ); the best edition is by Karl Kinzel in " Germanistische Handbibliothek ", ed.

The question of evolution of sex from asexual reproduction have engaged the attentions of biologists such as Charles Darwin, August Weismann, Ronald Fisher, George C. Williams, John Maynard Smith and W. D. Hamilton, with varied success.

After Huxley the most important influence on his thought was August Weismann, the German zoologist who rejected Lamarkism, and wholeheartedly advocated natural selection as the key force in evolution at a time when other biologists had doubts.

The origins of the concept of eugenics began with certain interpretations of Mendelian inheritance, and the theories of August Weismann.

Weismann and Wallace rejected the Lamarckian idea of inheritance of acquired characteristics, something that Darwin had not ruled out.

A sequestered germ line or Weismann barrier is specific to animals, and epigenetic inheritance is expected to be far more common in plants and microbes.

Weismann and Wallace rejected the Lamarckian idea of inheritance of acquired characteristics, something that Darwin had not ruled out.

The term Darwinism had covered a wide range of ideas, many of which differed from Darwin's views, but it became associated with the minority view of August Weismann who went further than Darwin by rejecting inheritance of acquired characters and attributing all evolution to natural selection, a view also called neo-Darwinism.

Weismann ’ s view was founded on the belief that biological inheritance is inconceivable except by way of germ plasm from parents to offspring.

In 1873, August Weismann postulated the equivalence of the maternal and paternal germ cells for heredity.

The strict neo-Darwinism of August Weismann gained few supporters in the late 19th century.

On the soon-to-be demolished stage of the Weismann Theatre, a reunion is being held to honor Weismann's " Follies " shows past, and the beautiful chorus girls who once performed there.

Finally Mr. Weismann enters to greet his guests.

For the safety of gene therapy, the Weismann barrier is fundamental in the current thinking.

However, there are indications that the Weismann barrier can be breached.

* 1834 – August Weismann, German biologist ( d. 1914 )

* UCLA DIS 245 " Info Access " Wiki on Reference Services, edited by John V. Richardson Jr. and Debbie Weismann

Weismann realised that the cells that produce the germ plasm, or gametes ( such as sperm and egg in animals ), separate from the somatic cells that go on to make other body tissues at an early stage in development.

This is referred to as the Weismann barrier.

The idea of the Weismann barrier is central to the Modern evolutionary synthesis, though it is not expressed today in the same terms.

Weismann is much admired today.