Nullisomy

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Nullisomy

a type of genome mutation in which a pair of chromosomes that are normally present in the genome is missing. Organisms that exhibit nullisomy are called nullisomes. Nullisomy, especially in higher animals, usually results in death. Viable nullisomes can be found among polyploid plants; these nullisomes are used for nullisomic analysis and for establishing new, commercially valuable strains. Nullisomic analysis is used to determine genetic linkage groups and to study the traits that are controlled by these groups. The method is also applied to tissue-culture studies of human nullisomic cells.

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No references found			The following categories of sperm aneuploidy were included as dependent variables: disomy X (sperm FISH genotype X-X-21); disomy Y (Y-Y-21); disomy XY (X-Y-21); disomy 21 (X-21-21 or Y-21-21); overall hyperhaploidy involving chromosomes X, Y, and 21 (sum of XY, disomy X, disomy Y, and disomy 21); sex nullisomy (_21); 21 nullisomy (X_ or Y_); overall hypohaploidy involving chromosomes X, Y, and 21 (sum of sex nullisomy and 21 nullisomy); and diploidy. Benzene exposure near the U.S. permissible limit is associated with ... by Xing, Caihong; Marchetti, Francesco; Li, Guilan; Weldon, Rosana H.; Kurtovich, Elaine; Young, Suzann / Environmental Health Perspectives A moderately increased prevalence of chromosomes X, Y, and 18 sperm aneuploidies was also observed in these workers but nullisomy was not scored (15). Organophosphorous pesticide exposure increases the frequency of sperm ... by Cebrian, Mariano E. / Environmental Health Perspectives			null matrix Null Method null modem null modem cable null pointer null reference system null sequence null set null space null string null surface null value null vector null-balance recorder null-current circuit null-current measurement null-terminated multibyte string Nullarbor Nullarbor Plain nullary nullary composition nullification Nullification of Elections nulling nulling interferometry Nullisomy nullity nullity of marriage Num Lock NUMA Numa Droz NUMA machine Numa Pompilius NUMA-Q Numantia Numazu Numbat Number number class modulo N number cruncher number crunching number density number field number keys number line Number Nine Number One number record printer number scale number sign Number six fuel			nullifier Nullifiers Nullifiers nullifies nullifies nullify nullify nullify nullify a marriage nullify one’s gains nullifying nullifying nulligravida nulligravida nulling nulling nulling nulling Nulling interferometry Nulling Spot Beam nullipara nullipara nullipara nulliparae nulliparae nulliparity nulliparity nulliparous nulliparous Nullipore Nullisomy nullities nullities nullities nullity nullity nullity Nullity of marriage Nullity of marriage Nullity of marriage nullius filius nullius momenti NULLO NULLO nullo modo fieri potest NullPointerException nulls nulls nulls nulls Nullsoft Nullsoft Developer Network Nullsoft Scriptable Install System Nullsoft Streaming Video Nullsoft SuperPimp Install System Nullspace Nullspace Nullum arbitrium Nullum exemplum est idem omnibus Nullum fecerunt arbitrium Nullum iniquum praesumendum in jure

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