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1 Ιαν 2002 · Vestigial organs are defined as genetically determined structures that have lost their ancestral (or salient) function. [1] [2] [3] Duckweeds, an aquatic monocot family, exhibit both these...
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In 21st-century articles from primary scientific journals, we found enough examples of biological structures that scientists identify as vestigial to place 64 entries in Table 1. Several of these entries include multiple species or supraspecific taxa.
8 Σεπ 2018 · Although the cecal appendix has been widely viewed as a vestige with no known function or a remnant of a formerly utilized digestive organ, the evolutionary history of this anatomical structure...
31 Οκτ 2023 · Structures that have no apparent function and appear to be residual parts from a past ancestor are called vestigial structures. Examples of vestigial structures include the human appendix, the pelvic bone of a snake, and the wings of flightless birds.
24 Νοε 2015 · Here we use a phylogenetic bracketing approach to identify vestigial structures in mammalian postcranial skeletons and present a descriptive survey of such structures in the Mammalia.
We review the literature on atavistic and ves-tigial anatomical structures of the head, neck, and spine that may be encountered in clinical practice. We define atavistic and vestigial structures and employ these definitions consistently when classifying anatomical structures.
The problems are illustrated by Dr. Theobald's use of the human coccyx (which he describes as "the four fused tail vertebrae of humans") as an example of a vestigial structure. It has long been known that the coccyx serves as a point of attachment for ligaments and several important muscles.
