Search results
Results from the WOW.Com Content Network
The term boundary paradox refers to the conflict between traditional, rank-based classification of life and evolutionary thinking. In the hierarchy of ranked categories it is implicitly assumed that the morphological gap is growing along with increasing ranks: two species from the same genus are more similar than other two species from different genera in the same family, these latter two ...
Compartment boundaries establish these organizing centers [5] [7] by providing the source of morphogens [9] that are responsible for the positional information required for development and regeneration. [9] [10] The inability of cell competition to occur across the boundary, indicates that each compartment serves as an autonomous unit of growth.
The hierarchy of biological classification's eight major taxonomic ranks. A genus contains one or more species. Minor intermediate ranks are not shown. A species (pl.: species) is a population of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. [1]
Introgression is an important source of genetic variation in natural populations and may contribute to adaptation and even adaptive radiation. [7] It can occur across hybrid zones due to chance, selection or hybrid zone movement. [8]
Succession after disturbance: a boreal forest one year (left) and two years (right) after a wildfire.. Ecological succession is the process of change in the species that make up an ecological community over time.
Phylogenies showing the terminology used to describe different patterns of ancestral and derived trait states. [1] Imaginary cladogram. [2] The yellow mask is a plesiomorphy for each living masked species, because it is ancestral. [2]
The hierarchy of biological classification's eight major taxonomic ranks.A class contains one or more orders. Intermediate minor rankings are not shown. Order (Latin: ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy.
An acquired characteristic is a non-heritable change in a function or structure of a living organism caused after birth by disease, injury, accident, deliberate modification, variation, repeated use, disuse, misuse, or other environmental influence.