| 释义 |
law of segregation
law of segregationn. See Mendel's law.Men′del's law′
n. 1. Also called law of segregation. the principle stating that during the production of gametes the two copies of each hereditary factor segregate so that offspring acquire one factor from each parent. 2. Also called law of independent assortment. the principle stating that the laws of chance govern which particular characteristics of the parental pairs will occur in each individual offspring. 3. Also called law of dominance. the principle stating that one factor in a pair of traits dominates the other in inheritance unless both factors in the pair are recessive. [1900–05; after German. J. Mendel] Thesaurus| Noun | 1. | law of segregation - members of a pair of homologous chromosomes separate during the formation of gametes and are distributed to different gametes so that every gamete receives only one member of the pairMendel's law - (genetics) one of two principles of heredity formulated by Gregor Mendel on the basis of his experiments with plants; the principles were limited and modified by subsequent genetic research |
EncyclopediaSeelawlaw of segregation
law [law] a uniform or constant fact or principle. For specific named laws, see under the name.law of independent assortment the members of gene pairs segregate independently during meiosis; see also mendel's laws.inverse square law the intensity of radiation is inversely proportional to the square of the distance from the source of radiation.law of segregation in each generation the ratio of (a) pure dominants, (b) dominants giving descendants in the proportion of three dominants to one recessive, and (c) pure recessives is 1:2:1. This ratio follows from the fact that the two alleles of a gene cannot be a part of a single gamete, but must segregate to different gametes. See also mendel's laws.law of seg·re·ga·tionfactors that affect development retain their individuality from generation to generation, do not become contaminated when mixed in a hybrid, and become sorted out from one another when the next generation of gametes is formed. Synonym(s): Mendel first lawlaw of segregationn. See Mendel's law.law of seg·re·ga·tion (law seg'rĕ-gā'shŭn) Factors that affect development retain their individuality from generation to generation, do not become contaminated when mixed in a hybrid, and become sorted out from one another when the next generation of gametes is formed.
Synonym(s): Mendel first law. Mendel, Gregor Johann, Austrian geneticist, 1822-1884. Mendel first law - factors that affect development retain their individuality from generation to generation, do not become contaminated when mixed in a hybrid, and become sorted out from one another when the next generation of gametes is formed. Synonym(s): law of segregationMendel second law - different hereditary factors assort independently when the gametes are formed. Synonym(s): law of independent assortmentmendelian character - an inherited character under the control of a single locus.mendelian inheritance - inheritance in which stable and undecomposable characters controlled by a single genetic locus are transmitted over many generations. Synonym(s): alternative inheritancemendelian ratio - the ratio of progeny with a particular phenotype or genotype expected in accordance with Mendel law among the offspring of matings specified as to genotype or phenotype.law of seg·re·ga·tion (law seg'rĕ-gā'shŭn) Factors that affect development retain their individuality from generation to generation, do not become contaminated when mixed in a hybrid, and become sorted out from one another when the next generation of gametes is formed.
Synonym(s): Mendel first law. law of segregation
Related to law of segregation: law of independent assortmentWords related to law of segregationnoun members of a pair of homologous chromosomes separate during the formation of gametes and are distributed to different gametes so that every gamete receives only one member of the pairRelated Words |