242 results found

Search Results for: variant

Variant

variant Something which differs in form from another thing, though really the same; as, a variant from a type in natural... Read More

Codominance

Codominance Definition Codominance is a form of inheritance wherein the alleles of a gene pair in a heterozygote are fully... Read More

Polymorphism

Polymorphism Definition The occurrence of two or more different forms or morphs in the population of a species is referred... Read More

Woolly cheetah

Woolly cheetahs were reported in the 19th century as a separate species of cheetah that had longer, denser fur. Several... Read More

Darwinian fitness

Definition noun A relative measure of reproductive success of an organism in passing its genes to the next generation's gene... Read More

Homogenous

What is homogenous? What does homogenous mean? The word homogenous has been derived from two Greek words that are... Read More

Variation

Reviewed by: Mary Anne Clark, PhD Definition noun, plural: variations A difference or deviation (e.g. in... Read More

Dominant

Dominant Definition The word dominant or dominant trait is commonly used in biology. The general meaning of dominant is to... Read More

Spontaneous generation

Definition noun plural: spontaneous generations The previously popular notion that living organisms arise or develop from... Read More

Allopatric speciation

We can define speciation as a process by which the novel genetically independent group of organisms are formed through the... Read More

Isoenzyme

Isozymes (also known as isoenzymes) are enzymes that differ in amino acid sequence but catalyze the same chemical reaction.... Read More

Multiple alleles

Alleles are the pairs of genes occupying a specific spot called locus on a chromosome. Typically, there are only two alleles... Read More

Fit

Definition adjective (biology) Adapted, i.e. in a way that an organism is able to live and reproduce offspring in an... Read More

PEP carboxylase

Definition noun An enzyme in the carboxylases responsible for the formation of the four-carbon compound oxaloacetate by... Read More

PEPC

Definition noun An enzyme in the carboxylases responsible for the formation of the four-carbon compound oxaloacetate by... Read More

Controlled variable

Definition noun, plural: control variables A variable that remains unchanged or held constant to prevent its effects on the... Read More

Megakaryocyte

Definition noun, plural: megakaryocytes A large cell in the bone marrow with characteristic lobulate nucleus and is... Read More

Phloem fiber

Definition noun (botany) The elongated sclerenchyma cells in the phloem, and is responsible for providing tension strength... Read More

Ovocyte

Definition noun, plural: ovocytes (1) A female gametocyte. (2) A developing female germ cell or gamete. Supplement An... Read More

Bast fiber

Definition noun (botany) The durable, nonliving sclerenchyma fiber in the phloem, providing support to the... Read More

F-prime bacterium

Definition noun, plural: F' bacteria The bacterium possessing a plasmid containing the F factor and a part of the bacterial... Read More

Dimerization

Definition noun, plural: dimerizations (1) The chemical reaction that joins two molecular subunits, resulting in the... Read More

Base pair substitution

Definition noun, plural: base pair substitutions A type of mutation involving replacement or substitution of a single... Read More

Replacement model

Definition noun A theory proposed by Christopher Stringer and Peter Andrews suggesting that the place of origin of modern... Read More

Regional continuity model

Definition noun A scientific model supported by Milford Wolpoff in which it holds that the modern humans came from a single,... Read More

Catalyse

Definition verb (1) To speed up a process, especially a chemical or biochemical reaction. (2) To cause catalysis. (3) To... Read More

Heterodimerization

Definition noun The process of coming up with a single compound by joining two different subunits. Supplement Word origin: ... Read More

Homodimerization

Definition noun The process of joining two identical subunits to form a single compound. Supplement Word origin: Greek... Read More

Microtubule organizing center

Definition noun A structure inside the cell from where microtubules organize following depolymerization to turn into tubular... Read More

Cell center

Definition noun The region in the cytoplasm containing the centrioles, and usually adjacent to the nucleus of the... Read More

Hemocoel

Definition noun, plural: hemocoels The body cavity found in many invertebrates where the hemolymph circulates... Read More

Coelome

Definition noun A less used variant for coelom, which is a body cavity filled with fluid. Supplement Animals may be grouped... Read More

Fiber

Definition noun, plural: fibers (1) (anatomy) any elongated, thread-like structure, e.g. nerve fiber (2) (botany) A cell... Read More

Non-living thing

A non-living thing in biology means any form without life, such as an inanimate body or object. Compared with the entity... Read More

Gene flow

Definition noun The movement and exchange of genes or alleles from one population of species to another Supplement Gene flow... Read More

Microliter

Definition noun, plural: microliters A unit of volume that is equal to one millionth of a liter. Supplement Symbol:... Read More

Erythroblastosis fetalis

Definition noun A medical condition in the fetus or newborn in which many erythroblasts are released in fetal blood from the... Read More

Mature mRNA

Definition noun plural: mature mRNAs The completely processed mRNA molecule in the cell of eukaryotes Details Overview... Read More

Hind limb

Definition noun, plural: hind limbs The back limb, or the posterior extremity of an animal. Supplement The hind limb... Read More

Control variable

Definition noun, plural: control variables A variable that remains unchanged or held constant to prevent its effects on... Read More