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The relationship is therefore classified as mutualistic. [ 1] Symbiosis ( Ancient Greek συμβίωσις symbíōsis: living with, companionship < σύν sýn: together; and βίωσις bíōsis: living) [ 2] is any type of a close and long-term biological interaction, between two biological organisms of different species. The two organisms ...
The cell cycle in eukaryotes: I = Interphase, M = Mitosis, G 0 = Gap 0, G 1 = Gap 1, G 2 = Gap 2, S = Synthesis, G 3 = Gap 3. Cell division is the process by which a parent cell divides into two daughter cells. [ 1] Cell division usually occurs as part of a larger cell cycle in which the cell grows and replicates its chromosome (s) before dividing.
Allometry ( Ancient Greek ἄλλος állos "other", μέτρον métron "measurement") is the study of the relationship of body size to shape, [ 1] anatomy, physiology and behaviour, [ 2] first outlined by Otto Snell in 1892, [ 3] by D'Arcy Thompson in 1917 in On Growth and Form [ 4] and by Julian Huxley in 1932.
Grade (slope) The grade (US) or gradient (UK) (also called stepth, slope, incline, mainfall, pitch or rise) of a physical feature, landform or constructed line refers to the tangent of the angle of that surface to the horizontal. It is a special case of the slope, where zero indicates horizontality. A larger number indicates higher or steeper ...
Developmental biology is the study of the process by which animals and plants grow and develop. Developmental biology also encompasses the biology of regeneration , asexual reproduction , metamorphosis , and the growth and differentiation of stem cells in the adult organism.
Cline (biology) In biology, a cline is a measurable gradient in a single characteristic (or biological trait) of a species across its geographical range. [ 1] Clines usually have a genetic (e.g. allele frequency, blood type ), or phenotypic (e.g. body size, skin pigmentation) character. They can show either smooth, continuous gradation in a ...
v. t. e. Anatomy (from Ancient Greek ἀνατομή (anatomḗ) ' dissection ') is the branch of morphology concerned with the study of the internal structure of organisms and their parts. [ 1] Anatomy is a branch of natural science that deals with the structural organization of living things. It is an old science, having its beginnings in ...
Cladistics. Cladistics ( / kləˈdɪstɪks / klə-DISS-tiks; from Ancient Greek κλάδος (kládos) 'branch') [ 1] is an approach to biological classification in which organisms are categorized in groups ("clades") based on hypotheses of most recent common ancestry. The evidence for hypothesized relationships is typically shared derived ...