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British Library digitised image from page 38 of “Fables for the Female Sex [By Edward Moore and Henry Brooke. In verse. With engravings after F. Hayman.]”
Sex
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Title: "Fables for the Female Sex [By Edward Moore and Henry Brooke. In verse. With engravings after F. Hayman.]"
Author(s): Moore, Edward, of Abingdon [person] ; Brooke, Henry, approximately 1703-1783 [person]
British Library shelfmark: "Digital Store 11643.h.24"
Page: 38 (scanned page number – not necessarily the actual page number in the publication)
Place of publication: London (England)
Date of publication: 1746
Publisher: R. Francklin
Edition: Second edition
Type of resource: Monograph
Language(s): English
Physical description: 173 pages (8°)

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001188919 (physical copy) and 014816699 (digitised copy)
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Image from page 178 of “Heredity and sex” (1913)
Sex
Bild von Internet Archive Book Images
Identifier: hereditysex1913morg
Title: Heredity and sex
Year: 1913 (1910s)
Authors: Morgan, Thomas Hunt, 1866-1945
Subjects: Heredity Sex Heredity
Publisher: New York, Columbia University Press
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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Text Appearing Before Image:
Fig. 82. — Two gynandromorphs of Drosophila ampelophila. Upperleft-hand figure, female dorsally, male ventrally (as seen in third figure,lower line). Upper right-hand figure, male on left side, female on right,and correspondingly the under side shows the same difference (lower row,last figure to right. Lower row from left to right; normal female, normalmale, vertical gynandromorph and lateral gynandromorph. half of the egg containing the double nuclei femalestructures will develop; from the other half, contain-ing the half number of chromosomes, male structures(Fig. 83, A). Here we have a very simple explanationof the gynandromorphism. 164 HEREDITY AND SEX There is another way in which we may imagine thatthe results are brought about. It is known that two or

Text Appearing After Image:
FiQ 83. _ Diagram, illustrating on left (A) Boveris hypothesis, on right(B) the authors hypothesis, of gynandromorphism. more spermatozoa frequently enter the egg of the bee.Should only one of them unite with the egg nucleus,the parts that descend from this union will be female.If any of the outlying sperm should also develop, GYNANDROMORPHISM 165 they may be supposed to produce male structures(Fig. 83, B). The first case of the fly, in which one half the bodyis male and the other female, would seem better inaccord with Boveris hypothesis. In its supportalso may be urged the fact that Boveri and Herbsthave shown that the belated sperm-nucleus mayunite with one of the two nuclei that result from thefirst division of the egg nucleus. On the other hand, the second case of the fly (where6nly a small part of the body is male) may be betteraccounted for by my hypothesis. It is known thatsingle sperms that enter an egg without a nucleus,or even with one, may divide. The two hypothesesare not

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Image from page 33 of “Heredity and sex” (1913)
Sex
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Identifier: hereditysex00morg
Title: Heredity and sex
Year: 1913 (1910s)
Authors: Morgan, Thomas Hunt, 1866-1945
Subjects: Heredity Sex
Publisher: New York, N.Y. : Columbia University Press
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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Text Appearing After Image:
Fig. 6. — Chromatin diminution and origin of the germ-cells in Ascaris.(After Boveri.) THE EVOLUTION OF SEX 21 first sight the most natural interpretation. It might besaid, indeed, that they are among the first cells todifferentiate, but only in the sense that they specialize,as germ-cells.

Note About Images
Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability – coloration and appearance of these illustrations may not perfectly resemble the original work.