Replication At Biology Glossary

What is it? the production of exact copies of complex molecules during the growth of living organisms.

Bio Definition Added By: Caleb

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Other Similar Biology Terms:

Bio Term immunoglobulin gene is A gene encoding one of the protein chains (light or heavy) of an immunoglobulin. The germline genes are activated by a special recombination process that joins a number of different gene segments together. In the case of immunoglobulin light chains there are three segments (V variable, J joining and C constant). In the case of immunoglobulin heavy chains there are four segments (V variable, D diversity, J joining and C constant). There are many different V segments (light chains ~300, heavy chains ~500), 4 J segments in both light and heavy chain genes, 12 D segments in the heavy chain gene and 1 C segment in light chain genes, 5 C segments in heavy chain gene. The recombination process appears to be able to join any V with any J (light chain) or any V to D to J (heavy chain). The total number of possible immunoglobulins (ie the number of possible light chains times the number of possible heavy chains) that can be generated by this mechanism is thus several 10s of millions (300x4x500x12x4=28800000). It is certain that the number is greater than this because the recombination events themselves are not precise and random loss of nucleotides from each recombining end occurs.

Bio Term ecological succession is The progression of plant life and attendant animal life in a given geographic location, from pioneer plant to climax community.

Bio Term Secreted protein is A protein that is exported through the cytoplasmic membrane. Most secreted proteins have specific signal sequences that promote interaction with the export apparatus in the membrane.

Bio Term Genotype is The characteristics of the alleles for a particular gene present within an individuals cells

Bio Term Complementation is The ability of a gene to produce a functional gene product which compensates for the mutant phenotype caused by a mutation in another gene. Typically, the complementing gene produces a gene product (e.g. a repressor protein or an enzyme for synthesis of a metabolite) that is diffusible and thus functions in trans.