segregation


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Related to segregation: law of segregation

segregation

 [seg″rĕ-ga´shun]
the separation of allelic genes during meiosis as homologous chromosomes begin to migrate toward opposite poles of the cell, so that eventually the members of each pair of allelic genes go to separate gametes.

seg·re·ga·tion

(seg'rĕ-gā'shŭn),
1. Removal of certain parts from a mass, for example, those with infectious diseases.
2. Separation of contrasting characters in the offspring of heterozygotes.
3. Separation of the paired state of genes, which occurs at the reduction division of meiosis; only one member of each somatic gene pair is normally included in each sperm or oocyte; for example, an individual heterozygous for a gene pair, Aa, will form gametes half containing gene A and half containing gene a.
4. Progressive restriction of potencies in the zygote to the following embryo.
[L. segrego, pp. -atus, to set apart from the flock, separate]

segregation

/seg·re·ga·tion/ (seg″rĕ-ga´shun)
1. the separation of allelic genes during meiosis as homologous chromosomes begin to migrate toward opposite poles of the cell, so that eventually the members of each pair of allelic genes go to separate gametes.
2. the separation of different elements of a population.
3. the progressive restriction of potencies in the zygote to the various regions of the forming embryo.

segregation

(sĕg′rĭ-gā′shən)
n.
1. The act or process of segregating or the condition of being segregated.
2. Genetics The separation of paired alleles or homologous chromosomes, especially during meiosis, so that the members of each pair appear in different gametes.

segregation

the separation of paired alleles during meiosis so that members of each pair of alleles appear in different gametes. See also Mendel's laws.

seg·re·ga·tion

(seg'rĕ-gā'shŭn)
1. Removal of certain parts from a mass (e.g., those with infectious diseases).
2. Separation of contrasting characters in the offspring of heterozygotes.
3. Separation of the paired state of genes, which occurs at the reduction division of meiosis; only one member of each somatic gene pair is normally included in each sperm or ovum.
4. Progressive restriction of potencies in the zygote to the following embryo.
[L. segrego, pp. -atus, to set apart from the flock, separate]

segregation

  1. the separation of HOMOLOGOUS CHROMOSOMES during anaphase 1 of MEIOSIS, to produce gametes containing only one allele of each gene. Such an occurrence is the physical mechanism underlying the first law of MENDELIAN GENETICS and is particularly important when the two separated alleles are different.
  2. an ability of bacterial REPLICONS to be partitioned accurately and evenly between daughter cells during CELL DIVISION. See par LOCUS.

segregation

the separation of allelic genes during meiosis as homologous chromosomes begin to migrate toward opposite poles of the cell, so that eventually the members of each pair of allelic genes go to separate gametes.

adjacent segregation
during meiosis adjacent centromeres segregate together.
alternate segregation
when diagonally opposite centromeres segregate together.
References in periodicals archive ?
If segregation is our measure, we have a long way to go before we are truly a postracial society," concludes Lichter, who maintains that suburban communities use housing, taxation, and zoning laws to include or exclude racial and ethnic minorities.
A cost segregation study can be highly complex and could relate to accounting, tax law, construction, and engineering.
The larger and more densely populated a metro area, they found, the greater the economic segregation there:
This has led to a fall in segregation based on this measure.
Lorraine Hansberry's Late Segregation Revisions and Toni Morrison's Early Post-Civil Rights Ambivalence," attempts to link two otherwise seldom associated texts in terms of Norman's neo-segregation analytic.
In January 2011 the Court handed down a decision that forced segregation on public buses is illegal but allowed passengers to board the bus from the back door in order to allow voluntary segregation.
Prior to 2008, inmates housed in segregation did not have access to programming, largely due to security concerns.
Racial/ethnic residential segregation refers to the degree to which two or more groups live separately from one another in a geographic area (Massey and Denton 1988).
It is quite delightful that the largest church functioning on American soil should throw the weight of its authority against segregation, and Archbishop Rummel deserves praise for making a second disciplinary attack on segregation in the parochial schools of his diocese after he had been forced to retreat from his first attack by the defiance of his flock.
com)-- Scarpello Consulting has significantly improved much needed cash flow for businesses and organazations in the health care industry and is now offering a free cost segregation benefit analysis.
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