embryogeny

Until recently, practically nothing was known about the morphogenetic processes concealed in this metamorphosis, about what cranial structures take part in it, and about the exact way in which the cetacean skull becomes transformed during embryogeny.

The Panda's Thumb: Development Archives 2010

His study of embryogeny impressed on him the frequent occurrence of deviations from the norm in individual development “Errors” arise that produce new characteristics of organisms and are then trans - mitted to offspring.

EVOLUTIONISM THOMAS A. GOUDGE 1968

Mr. Brown, that it was a disadvantage to be able to draw, I always fancy he had Bauer in his mind's eye; for had he been a writer and not a drawer, before 1800, in great probability we should have known nearly as much of embryogeny as we do now.

Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries William Griffith

But he still holds fast to the main thesis of transcendentalism -- the absolute unity of plan of all animals, vertebrate and invertebrate alike, [322] the gradual perfecting of organisation from monad to man, the repetition in the embryogeny of the higher animals of the "zoogeny" of the lower.

Form and Function A Contribution to the History of Animal Morphology

Baer's law that the characters of the large groups appear earlier in embryogeny than the characters of the lesser classificatory divisions.

Form and Function A Contribution to the History of Animal Morphology

The primitive Annelid mouth, however, does not appear in the embryogeny of Vertebrates, for the great development of the brain crowds it out of existence.

Form and Function A Contribution to the History of Animal Morphology

The number of stages in embryogeny is proportionate to the complexity of the adult; the younger the embryo the simpler its organs -- such is the general formula of the relation between the embryo and the adult.

Form and Function A Contribution to the History of Animal Morphology

The hypothesis explains also the way in which the orderly succession of stages in embryogeny is brought about, for we can readily understand that the embryo will not remember any stage until it has passed through the stage immediately preceding it.

Form and Function A Contribution to the History of Animal Morphology

Opinions differed considerably as to the primitive mode of origin of the two-layered sac which was very generally admitted to be of constant occurrence in early embryogeny.

Form and Function A Contribution to the History of Animal Morphology

Fabrizio of Acquapendente (Fabr. ab Aquapendente, 1537-1619), who worked in the field of embryogeny and studied carefully the valves in the veins, and finally Giulio Casserio (1561-1619), who published a series of anatomical charts.

The Catholic Encyclopedia, Volume 10: Mass Music-Newman 1840-1916 1913