The cytologically visible consequence of a reciprocal recombination event in meiosis, observable in the later stage of meiotic prophase. Chiasmata hold homologous chromosomes together prior to anaphase of the first meiotic division.

One of the subregions of a chromosome visible microscopically after special staining.

A curated protein sequence database. See the SWISS-PROT

A type of mutation in which two nonhomologous chromosomes are each broken and then repaired in such a way that: 1. the resulting chromosomes each contain material from the other chromosome (areciprocal translocation) 2. one of the chromosomes contains an insertion of material from the other chromosome, with the other chromosome containing a deletio [..]

A term that identifies one end of a single-stranded nucleic acid molecule. The 3' end is that end of the molecule which terminates in a 3' phosphate group. The 3' direction is the direction toward the 3' end. Nucleic acid sequences are written with the 5' end to the left and the 3' end to the right, in reference to the [..]

3' Untranslated Region. That portion of an mRNA from the 3' end to the position of the last codon used in translation. See also 5' UTR.

A term that identifies one end of a single-stranded nucleic acid molecule. The 5' end is that end of the molecule which terminates in a 5' phosphate group. The 5' direction is the direction toward the 5' end. Nucleic acid sequences are written with the 5' end to the left and the 3' end to the right, in reference to the [..]

5' Untranslated Region. That portion of an mRNA from the 5' end to the position of the first codon used in translation. See also 3' UTR.

Formulated without experimental data. Latin. From the beginning.

A unique alphanumeric character string that is used to unambiguously identify a particular record in a database. Examples include MGI accession IDs, GenBank accession IDs, and PubMed accession IDs.