bottleneck

(redirected from Bottle neck)
Also found in: Dictionary, Thesaurus, Financial, Encyclopedia.
Related to Bottle neck: Bottleneck guitar
A marked decrease in gene pool diversity due to a low number of genetically distinct individuals in the population, i.e., a population bred from 2 individuals has far fewer variables on the allelic loci—a bottleneck—than a second population bred from hundreds of individuals
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

bottleneck

a period in the history of a population during which the number of individuals is reduced to a low number, perhaps by disease or extreme environmental conditions. As a result RANDOM GENETIC DRIFT may occur in the population. See also FOUNDER EFFECT.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
An outer ring on the nipple that grabs the bottle neck and seats the nipple in the correct orientation.
The fast fill phase in the generally cylindrical part of the bottle is started after the plastic bottle has been positioned under the filling valve and is followed by the low-foam, slow filling phase in the narrow bottle neck. A gas lock integrated at the product outlet ensures no-drip filling.
There is no contact between bottles because a gripper attached to the chain holds the bottle neck throughout the system.
The 42-year-old,of no fixed abode but who had been living in Dean Road,Wrexham,admitted making threats to kill,affray,and possessing a pair of scissors and a broken bottle neck as offensive weapons.
The report highlighted how the EAU becomes a bottle neck with patients coming in and being treated but unable to move on to main hospital wards because of a lack of beds.
It is added at the point of sale so that the bottle neck is more hygienic.
``To us, the romance of wine arises from the sensual pleasure of its aromas,flavours and textures, not from the smelly piece of bark inserted in the bottle neck.''
The Scorpion bottle neck gripper keeps the bottle centralised under the filling nozzle and locates the bottle on the bottle platform.
The boundary stone wall of the 14th century St James' parish church at Audlem, near Nantwich, causes a serious bottle neck for traffic.
SIG has developed a sliding sleeve that glides over the blow pin, giving the bottle neck a smoother surface comparable to a PET container, Andrich claims.