A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

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The processes by which gene products (largely RNA and proteins) are increased or decreased.
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Cells which have not fully differentiated yet, i.e. with the potential to develop into other kinds of cells through asymmetric cell division.
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Adaptation refers to both the current state of being adapted and to the dynamic evolutionary process that leads to the adaptation.
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Any biological process which displays an endogenous, entrainable oscillation of time.
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a single-stranded RNA virus which reproduces in human CD4-positive cells, which are primarily T-helper lymphocytes and macrophages. HIV is the causative patho…
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Computer programs that aid in the storage, processing, and analysis of biological data.
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The concepts of mate choice and competition over eligible members of the opposite sex in animals, including humans.
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a molecular target for a chemical signal such as a neurotransmitter, hormone, or drug. Binding of the signal to the receptor initiates or modulates behaviour in the receiving cell.
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The laboratory technique involving the extraction of DNA from a cell in a pure form.
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The processes by which environmental information is encoded, stored, and retrieved.
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Electromagnetic radiation, specifically the range of frequencies visible to humans ("visible light").
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Microanatomy of cells and tissues
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The process of breaking and recombining strands of DNA.
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Biology dealing with study of reproductive process, especially in higher animals. Closely related to reproductive endocrinology.
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Pigmentation refers to the coloration in plants or animals due to the presence of pigment in the tissue.
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the smallest functional unit of life.
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A rapid change in the membrane potential of excitable cells such as neurons and muscles; this usually involves a steep rise (depolarization) followed by a steep fall in membrane potential (repolariza…
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The study of the distribution, incidence, and potential control of a disease.
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Ionizing electromagnetic waves, usually harmful to most biological beings.
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Questions pertaining to the processes by which new species arise.
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The administration of antigenic material to stimulate the immune system of an individual to develop adaptive immunity to a disease.
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The application of dynamic systems and game theory to evolving populations in biology, economics, and social sciences. It is particularly well suited for studying social dilemmas like the evolution of…
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The timing of key events in an organism's lifetime, including development, reproduction and death.
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A broad group of consisting of biomolecules that are soluble in non-polar solvents. Most of these molecules have huge hydrocarbon chains (linear or cyclic). Examples include glycerides (glyceryl ester…
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the study of organisms that lived in prehistoric times.
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Fruits develop from the flower of plants and hold the seeds. They are the way of plants to distribute their seeds.
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A structural aberrancy in DNA, as opposed to a sequence change (mutation). Often caused by reactive species.
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Questions looking for clarifications or definitions of biological terminology.
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Questions regarding organic compounds required by an organism as a vital nutrient in limited amounts.
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A region of repeating DNA at the end of a chromosome that protects the chromosome from decaying.
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a biopolymer mostly made from keratin, which grows from the skin. Hair is exclusively found in mammals.
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A collection of tissues which work together to accomplish a function. The organisational unit above tissues and below systems.