19 results found

Search Results for: vestigial

Vestigial

vestigial refers to an organ or part (for example, the human appendix) which is greatly reduced from the original ancestral... Read More

Vestigial organ

vestigial organ A rudimentary structure in humans corresponding to a functional structure or organ in the lower... Read More

Pleiotropy

Pleiotropy Definition When one single gene starts affecting multiple traits of living organisms, this phenomenon is known... Read More

Phenotype

Phenotype refers to the observable characteristics of an organism as a multifactorial consequence of genetic traits and... Read More

Vestige

A vestige, in biology, refers to the vestigial structures. Etymologically, the term came from the Latin vestīgium, meaning... Read More

Homologous structures

Homologous Structures Definition What are homologous structures? Before we define that, let us first identify the meaning... Read More

Chromosome 2

Definition noun In humans, the autosome that is considered as the second-largest, spanning more than 242 million base pairs,... Read More

Appendix

Definition noun, plural: appendixes (1) (anatomy) A worm-shaped, vestigial process extending from the lower blind end of... Read More

Vermiform appendix

Definition noun, plural: vermiform appendixes (anatomy) A worm-shaped, vestigial process extending from the lower blind end... Read More

Terminal nerve

Definition noun, plural: vagus nerves A small cranial nerve that courses anteriorly along the olfactory... Read More

Penile spine

Definition noun, plural: penile spines Any of the spiny projections along the glans or the shaft of the penis Supplement The... Read More

Areole

Definition noun, plural: areoles (botany) A spot, which may be raised or depressed, on the cactus body where spines, hair,... Read More

Rudimentary

rudimentary poorly developed and not functional. Compare: vestigial, obsolete. Pertaining to the early stages of... Read More

Head kidney

Head kidney --> pronephros 1. The definitive excretory organ of primitive fishes. Synonym: head kidney. 2. In the embryos of... Read More

Chordata

Chordata Definition What is Chordata? Chordata is the phylum of the animal kingdom that includes a large number of animal... Read More

Mantis

Mantis Definition A mantis (plural: mantises or mantes) refers to any of the insects that belong to the order Mantodea... Read More

Isopod

Definition noun, plural: isopods Any of the members of the order Isopoda, which is a taxonomic group characterized mainly by... Read More

Alimentary canal

Definition of Alimentary canal What is the alimentary canal? The alimentary canal is a muscular hollow continuous tubular... Read More

Glans penis

Definition noun, plural: glans penises (anatomy) The conical expansion of the corpus spongiosum that forms the head of the... Read More