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The rudimentary basis of a particular organ or other part, especially in an embryo.
‘Both anlagen persist in individual exconjugants, their cell mass increasing steadily for many days after conjugation was initiated.’
‘It may be that segment anlagen are produced in a multiplicative manner, with the result that the final number of total segments is always even.’
‘The initial anlage of the atherosclerotic plaque seen in adults can be seen as a fatty streak on the surface of the arterial wall during infancy.’
‘The anlagen for the eye imaginal disc arise as a group of about 20 cells in the embryo and proliferate through the first and second instar larval stages.’
‘Each scalid appears as a spinose anlage (= protoscalid) and differentiates in the next stage.’
‘The earliest expression of Hox genes for these arthropods is in the already formed segmental anlage, in the presumptive position of the developing segment.’
‘Evolutionary morphologists such as Haeckel and Gegenbaur argued that true homology can only exist between two parts that have developed from the same anlage.’
‘The MAC chromosomes are generated by fragmentation of the germline chromosomes in the developing macronuclear anlagen during conjugation, but the molecular mechanism remains to be elucidated.’
‘The segmental anlage of the larval and adult body plan is produced by a growth zone located just anterior to the pygidium.’
‘Mutant clones in the notum anlagen of the wing imaginal disc produce alterations in the pattern of medial thoracic bristles and a strong dorsal thoracic cleft.’
‘Mori suggested that atlantomastoideus, obliquus capitis superior, and longissimus capitis arise from the same anlage based on their innervation by the dorsal division of C1.’
‘The basicranial articulation was no longer the anchor for the palate, and the palatoquadrate was functionally replaced by its dermal anlagen, the maxillae.’
‘Spemann found that in certain amphibian species transplanted pieces of epidermis that were not part of the anlage of the lens also could be induced to produce a lens.’
‘In the terminal, proctodeal region of stage 10 embryos, bft transcripts appear in endodermal cells corresponding to the anlagen of the posterior spiracles, which also express Cut.’
‘It has been noted that the resulting split of the visual anlage resembles the morphogenesis of the vertebrate anterior plate.’
‘While all of the stages are linked to specific places, the fourth stage, which he labels ‘terrestrial anlage,’ is especially place-dependent because it is the time when the child learns the names of things in its immediate home territory.’
‘Studies on dechorionated eggs have shown that segmental anlagen are apparent quite early in embryonic development, though of course considerably after the end of the cleavage stage.’
‘These events begin early in the life of the fly when a small set of cells are set aside to form the eye anlagen during early embryogenesis.’
‘Isolation of ovarian anlage result in normal follicle-bearing ovarian tissue.’
‘In extant amniotes, however, the VN organ is situated too close to the midline to leave a mark on the maxilla, as is the anlagen of the organ in crocodilian and avian embryos.’
Origin
Late 19th century: from German, ‘foundation, basis’.