Cell Biology. A short segment of a chromosome located at an end of, or within, one of its arms, demarcated by a single constriction (narrowed…

Cytology. = satellite, n. 9.

Connected with what is second in local position. (Cytology): a chromosomal constriction not associated with the centromere.

Cell Biology. A transient expansion of a region of a polytene chromosome associated with RNA synthesis. Cf. puffed, adj. 2d, puffing, n.2 2c.

Genetics. A very small chromosomal satellite (satellite, n. 9).

a DNA sequence that is very similar to that of a functional gene but is not transcribed or translated, e.g. as a result of mutations that have…