237 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

Variation

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

Nucleosome

Nucleosome Definition Every organism is made of deoxyribonucleic acid, also known as DNA. DNA is made up of numerous... 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

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

Complete dominance

Complete Dominance Definition Genetics is the study of how traits are inherited by organisms and in what ways these... Read More

Isoenzyme

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

Spontaneous generation

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

Homogenous

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

Monomer

Monomer Definition What is a monomer? Monomers can be defined as building blocks of a polymer, which is a structure... 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

Heterodimerization

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

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

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

Dimerization

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

Pedigree

Definition noun (1) An ancestral line or chart depicting the lineage or descent of an individual. (2) (genetics) A diagram... Read More

Dicotyledon

Definition noun, plural: dicotyledons A group of flowering plants belonging to the class Magnoliopsida of Angiospermae... 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

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

Non-living Thing Definition A non-living thing in biology means any form without a life, such as an inanimate body or... 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

Hemorrhagic exudate

Definition noun A type of exudate that is bloody because of the large component of red blood cells released from ruptured... Read More

Anhidrosis

Definition noun, plural: anhidroses A pathological condition characterized by the inability to sweat... Read More

Amorphic mutation

Definition noun (genetics) A type of mutation wherein the change in gene leads to the loss of the normal (wild-type) gene... Read More