founder
81founder effect — noun Date: 1970 the effect on the resulting gene pool that occurs when a new isolated population is founded by a small number of individuals possessing limited genetic variation relative to the larger population from which they have migrated …
82founder population — fish broodstock used to start a fish culture programme …
83founder cells — 1. Daughter cells from the early cleavages of the zygote, with potential to form the individual tissues and organs of the body. 2. (PORIFERA) Cells responsible for ray length during the secretion of calcareous spicules …
84founder effect — The principle that when founders populate a new colony as an isolated entity, the population will contain only a small fraction of the total genetic variation of the parental population …
85founder effect — Biol. the accumulation of random genetic changes in an isolated population as a result of its proliferation from only a few parent colonizers. * * * …
86founder effect — noun A lessening of genetic variation when the entire population in question descends from a small number of founders …
87Founder effect — The positive effect on gene frequency when a population (a colony) has only a small number of original settlers (founders) one or more of whom had that gene. For example, the gene for Huntington disease was introduced into the Lake Maracaibo… …
88Founder effect — Refers to the presence in a population of many individuals all with the same chromosome (or region of a chromosome) derived a single ancestor …
89Founder of Agnosticism — Thomas Henry Huxley …
90Founder of Agricultural Chemistry — Justus von Liebig …