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 ?
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:
Segregation in schools based on poverty fell between 1989 and 1993, then rose up to the early 2000s before levelling off and starting to drop again from 2008, the study says.
When inmates arrive in segregation, they receive an orientation to the segregation unit and a treatment plan that informs them of behavioral expectations while they are housed in segregation.
The historical context of segregation has played a major role in configuring health care facilities and services.
A client with a $4M senior living facility captured a $190,000 1st year tax benefit on an existing facility through a "look back" cost segregation study.
5) investigated fiber breakage and segregation along the flow axis as well as perpendicular to the flow direction in the case of PA66 long fiber ther-moplastic injection moldings.
What is more, Abel's research process itself is noteworthy because original segregation signs are strangely scarce and dispersed.
He did not indicate if gender segregation would advance to sophomore classes next year and continue rolling through the years.
Having completed more than 6,500 studies, the company will continue to expand and enhance its Cost Segregation services to meet the needs of taxpayers throughout the Life Cycle of Real Estate.
For me segregation of boys and girls in school is inhuman.
He said: "If that requires segregation, well then we have got to segregate the child in the best interests of that child.