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 was one of the first biologists to deny soft inheritance entirely.

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.

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.

Suddenly, at the peak of madness and confusion, the couples are engulfed by their follies, which transform the rundown theatre into a fantastical " Loveland ", an extravaganza even more grand and opulent than the gaudiest Weismann confection: " the place where lovers are always young and beautiful, and everyone lives only for love ".

In 1876 he suggested a hypothesis in explanation of heredity, resembling the germplasm theory subsequently elaborated by August Weismann, to the effect that the germinal protoplasm retains its specific properties from generation to generation, dividing in each reproduction into an ontogenetic portion, out of which the individual is built up, and a phylogenetic portion, which is reserved to form the reproductive material of the mature offspring.

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.

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

Immediately after university, Weismann took on a post as assistant at the Städtische Klinik ( city clinic ) in Rostock.

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.

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

Max Weismann is an American philosopher and a long-time friend and colleague of Mortimer Adler, with whom he co-founded the Center for the Study of the Great Ideas in Chicago.

The Weismann barrier is very important as it has implications for human gene therapy.

August Weismann proposed in 1889 an explanation for the evolution of sex, where the advantage of sex is the creation of variation among siblings.

Genetic determinism, which identifies the gene as the biological source of morphology and instinct, can be traced back to Austrian theorist August Weismann, who proposed in the 1890s that the key actors in the struggle for survival are not organisms but their genes, which he called determinants.

The remaining cell then led to half an embryo, leading Weismann to believe that the determinants for the embryo were divided along with each cell division.

After this work, Weismann accepts evolution as a fact on a par with the fundamental assumptions of astronomy ( e. g. Heliocentrism ).

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

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 claimed that acquired characteristics could not be inherited.

In his brief, Weismann decried the idea that " the treasured freedom of the individual ... should be swept away under the guise of the police power of the State.

Even if both of these possible exceptions turn out to be legitimate, the Weismann barrier just loses its absolute status.

Weismann referred to the chemical carrier of these determinants as the germ plasm, now known to be DNA.

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

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

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.

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

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.

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

This is referred to as the Weismann barrier.

Weismann is much admired today.