Hypothesis that an organism can pass on characteristics that it has acquired through use or disuse during its lifetime to its offspring

187 pages, 5 unnumbered pages of plates : illustrations, portraits ; 23 cm

The case of the midwife toad / Arthur Koestler.

xvi, 267 pages : illustrations, portraits ; 24 cm

The problem of the inheritance of acquired characters : a history of a priori and empirical methods used to find a solution = Problema nasledovaniya priobremennykh priznakov istoriya apriornykh i empiricheskikh popitok ee resheniya / L.I. Blacher ; English translation edited by F.B. Churchill.

Galleries and Reading Room

Library

Shop

Café

It's not possible to book tickets for events at present due to a problem with the ticketing system. We're working to fix it. You can still search and check information about events but please try again later if you want to book a ticket.

We're running paid user research studies to improve Wellcome Collection online

Take part in research

The archives landing page, archive category pages, and the 'Browse archives' link on the archive card list.

A 'Browse other types of archives' section.

Archive browsing

Archive collection level pages, plus the archive collection treatment on the work page and in search results.

The catalogue API's shortDescription is shown on the archive collection hero and in search results.

Archive collection

Clicking an image opens its details in a sidebar instead of a modal, with the selected image highlighted in the grid.

Updated image results grid and a re-sizable viewing pane.

Larger thumbnail, plus key information and onward journey in the sidebar.

Image sidebar preview

The three thematic browsing category pages (subjects, people & organisations, types & techniques) become accessible.

Subject sub-category pages become accessible, and the subjects category page gains a sub-category menu.

Inheritance of acquired characters

Works from the collections

The case of the midwife toad / Arthur Koestler.

The problem of the inheritance of acquired characters : a history of a priori and empirical methods used to find a solution = Problema nasledovaniya priobremennykh priznakov istoriya apriornykh i empiricheskikh popitok ee resheniya / L.I. Blacher ; English translation edited by F.B. Churchill.