Ichthyological terms, not general ones.
Abbreviation for deoxyribonucleic acid, a double-stranded, self-replicating genetic material comprised of a chain of nucleotides. Present in nearly all living organisms and is the main constituent of chromosomes. DNA segments containing genetic instructions are called genes and normally direct production and activity of RNA.
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A strand-like structure found in the nucleus of cells that contains DNA and associated proteins. Carries the genes determining heredity.
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Basic hereditary unit comprising a sequence of nuceleotides within a strand of DNA or RNA and occupying a fixed position on a chromosome. Generally determines a particular character or trait present in an organism by directing production and activity of RNA.
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Section of DNA comprising very short nucleotide sequences repeated many times. Highly polymorphic and used as a marker to determine genetic diversity, identify important genetic traits, analyse relationships, etc..
Basic structural unit of DNA and RNA.
Abbreviation for ribonucleic acid, a single-stranded, self-replicating genetic material comprised of a chain of nucleotides. Present in nearly all living organisms, and replaces and performs the role of DNA in some viruses. Particularly important in protein synthesis and sometimes in transmission of genetic information.