Search results
Results from the WOW.Com Content Network
Functional morphology is the study of the relationship between the structure and function of morphological features. Experimental morphology is the study of the effects of external factors upon the morphology of organisms under experimental conditions, such as the effect of genetic mutation. Anatomy is a "branch of morphology that deals with ...
In genetics, the phenotype (from Ancient Greek φαίνω (phaínō) ' to appear, show ' and τύπος (túpos) ' mark, type ') is the set of observable characteristics or traits of an organism. [ 1 ] [ 2 ] The term covers the organism's morphology (physical form and structure), its developmental processes, its biochemical and physiological ...
The concept was similar to the meaning of the term entelechy of vitalists like Hans Adolf Eduard Driesch (1867–1941). Thus the field hypothesis of ontogeny became fundamental in the early twentieth century to the study of embryological development. Rise of modern genetics
The study of evolutionary morphology concerns changes in species morphology over time in order to become better suited to their environment. [ 3 ] [ 16 ] These studies are conducted by comparing the features of species groups to provide a historical narrative of the changes in morphology observed with changes in habitat.
Eye color is an example of a (physical) phenotypic trait. A phenotypic trait, [1] [2] simply trait, or character state [3] [4] is a distinct variant of a phenotypic characteristic of an organism; it may be either inherited or determined environmentally, but typically occurs as a combination of the two. [5]
Homoplasy is the similarity in a feature that is not parsimoniously explained by descent from a common ancestor. Most often, homoplasy is viewed as a similarity in morphological characters. However, homoplasy may also appear in other character types, such as similarity in the genetic sequence, [4] [5] life cycle types [6] or even behavioral ...
In phylogenetics, a plesiomorphy ("near form") and symplesiomorphy are synonyms for an ancestral character shared by all members of a clade, which does not distinguish the clade from other clades. Plesiomorphy, symplesiomorphy, apomorphy, and synapomorphy all mean a trait shared between species because they share an ancestral species. [a]
In genetic polymorphism, the genetic makeup determines the morph. The term polymorphism also refers to the occurrence of structurally and functionally more than two different types of individuals, called zooids, within the same organism. It is a characteristic feature of cnidarians. [2]