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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RNA Sequences corresponding to genomic regions which are retained in processed RNA (i.e., not spliced out).
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Movement through the atmosphere using wings or other structures to generate lift.
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The organelle in which photosynthesis occurs
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the complex of DNA, histones, and other scaffolding proteins that make up the chromosomes, which in eukaryotes is located in the nucleus of the cell.
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The generation of ATP from the breakdown of organic molecules in the absence of oxygen.
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sites in proteins or on DNA where other proteins or DNA can bind. Binding sites are usually conserved.
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the agents which cause most of the toxicity of bacteria and are often highly toxic. Examples include the tetanus and the diptheria toxins.
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The production and emission of light by a living organism.
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Embryos of chickens (*Gallus gallus domesticus*) are often used in genetic experimentation and testing. To a lesser extent, adult chickens can be used as a laboratory animal.
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The chief enzyme involved in fatty acid biosynthesis. They include cerulenin, a natural products produced by the fungi Sarocladium oryzae.
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single-stranded RNA viruses that reverse-transcribe their genome into DNA that is then integrated into the host genome.
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Cells and organisms containing more than two paired (homologous) sets of chromosomes.
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not for asking questions about "learning biology". Learning is acquiring new or modifying existing knowledge, behaviors, skills, values, or preferences and may involve synthesizing differe…
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Drugs that bind to the opioid receptors (mu, delta & kappa).
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an extremely diverse genome region in vertebrates that is responsible for antigen presentation. There are two main classes, MHC I and MHC II.
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Is the process of covalently link two DNA ends. The process is usually done by the enzyme class of ligases.
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The locations at which two bones make contact. They may be movable or unmovable.
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a measure for the acidity (or basicity) of a solution. It is defined as the negative logarithm of the activity of the hydronium ion of a solution.