chromosome analysis


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Related to chromosome analysis: karyotyping, Cytogenetic analysis

analysis

 [ah-nal´ĭ-sis] (pl. anal´yses)
separation into component parts.
psychoanalysis. adj., adj analyt´ic.
activity analysis the breaking down of an activity into its smallest components for the purpose of assessment.
bivariate analysis statistical procedures that involve the comparison of summary values from two groups on the same variable or of two variables within a group.
blood gas analysis see blood gas analysis.
chromosome analysis see chromosome.
concept analysis examination of the attributes of a concept as it occurs in ordinary usage in order to identify the meanings attached to the concept.
content analysis a systematic procedure for the quantification and objective examination of qualitative data, such as written or oral messages, by the classification and evaluation of terms, themes, or ideas; for example, the measurement of frequency, order, or intensity of occurrence of the words, phrases, or sentences in a communication in order to determine their meaning or effect.
correlational analysis a statistical procedure to determine the direction of a relationship (positive or negative correlation) between two variables and the strength of the relationship (ranging from perfect correlation through no correlation to perfect inverse correlation and expressed by the absolute value of the correlation coefficient).
analysis of covariance (ANCOVA) a variation of analysis of variance that adjusts for confounding by continuous variables.
data analysis the reduction and organization of a body of data to produce results that can be interpreted by the researcher; a variety of quantitative and qualitative methods may be used, depending upon the nature of the data to be analyzed and the design of the study.
ego analysis in psychoanalytic treatment, the analysis of the strengths and weaknesses of the ego, especially its defense mechanisms against unacceptable unconscious impulses.
gait analysis see gait analysis.
gastric analysis see gastric analysis.
multiple-locus variable number of tandem repeat analysis (MLVA) a laboratory tool designed to recognize tandem repeats and other qualities in the genome of an individual to provide a high resolution DNA fingerprint for the purpose of identification.
multivariate analysis statistical techniques used to examine more than two variables at the same time.
power analysis a statistical procedure that is used to determine the number of required subjects in a study in order to show a significant difference at a predetermined level of significance and size of effect; it is also used to determine the power of a test from the sample size, size of effect, and level of significance in order to determine the risk of Type II error when the null hypothesis is accepted.
qualitative analysis the determination of the nature of the constituents of a compound or a mixture of compounds.
quantitative analysis determination of the proportionate quantities of the constituents of a compound or mixture.
SNP analysis analysis of single nucleotide polymorphisms to assess artificially produced genetic modifications or identify different strains of an organism.
transactional analysis a type of psychotherapy based on an understanding of the interactions (transactions) between patient and therapist and between patient and others in the environment; see also transactional analysis.
analysis of variance ANOVA; a statistical test used to examine differences among two or more groups by comparing the variability between the groups with the variability within the groups.
variance analysis the identification of patient or family needs that are not anticipated and the actions related to these needs in a system of managed care. There are four kinds of origin for the variance: patient-family origin, system-institutional origin, community origin, and clinician origin.
vector analysis analysis of a moving force to determine both its magnitude and its direction, e.g., analysis of the scalar electrocardiogram to determine the magnitude and direction of the electromotive force for one complete cycle of the heart.

chromosome analysis

Genetics A procedure in which cells–usually of fetal origin are obtained, either in the 1st trimester by chorionic villus biopsy, or later in pregnancy by amniocentesis, and grown in a tissue culture, to detect major chromosome defects Indications Mixed congenital anomalies with mental or growth retardation, infertility, in cryptorchidic testes, ambiguous genitalia, repeated neonatal death, advanced maternal age, and in adults, analysis of neoplasia Specimens Amniotic fluid–prenatal; blood in green top tube; BM if leukemia is suspected; maintain at room temperature. See Banding. Cf DNA hybridization, FISH, PCR.

chromosome analysis

Examination of stained CHROMOSOMES in a stage at which they are widely separated and easily visualized. The chromosomes are photographed and set out in matching pairs in an orderly arrangement known as a karyotype. The process allows ready diagnosis of a range of conditions known to be the result of gross chromosomal, rather than gene, abnormalities.
References in periodicals archive ?
Sibling analysis will determine whether two or more individuals have common biological parents, grandparent analysis is designed to provide answers to establish a biological relationship between an individual and alleged grandparent and Y chromosome analysis shows whether or not two men come from the same paternal line.
Yet despite this, "in practice, programs on Down syndrome are mostly limited to screening of high-risk pregnancies using fetal chromosome analysis, after which there are two choices: continuing or interrupting the pregnancy," says Penchaszadeh.
* High-resolution chromosome analysis. The chromosomes are prepared in such a way that they are a little longer than in standard chromosome analysis, so more bands can be seen.
A Gene Debate planned for 26 February will include an interactive online voting system and a video conference with Dr Mark Ross, Head of X Chromosome Analysis at the Sanger Institute, Cambridge.
In situ hybridization chromosome analysis of XYY and XYY males' spermatozoa [Letter].
The purpose of this book is to "provide a comprehensive description of the basic concepts involved in chromosome analysis in a single volume," with a targeted audience of practicing genetics professionals, as well as other clinicians who incorporate genetic testing into their practices.
In such cases, three-day-old embryos can be tested for gender by chromosome analysis, and the female embryos can be implanted on the fifth or sixth day.
He and his associates performed blood chromosome analysis on 300 infants born to 238 women following intracytoplasmic sperm injection.
But the trail of mitochondrial or Y chromosome analysis does allow discovery of past associations among far-flung populations -- for if a particular type of either occurs in a number of different populations around the world, it is a sure bet that at some time those populations have been in much closer contact.
"It offers the promise of greatly improving the efficiency, as well as potentially the accuracy, of both clinical and research chromosome analysis," says Huntington F.
Contract notice: supply of chips, reagents and consumables with the provision and maintenance of a platform for chromosome analysis on a microarray (acpa)
The last chromosome analysis revealed a karyotype of 46,XY,der(15)t(1;15)(q12;p11.2)[13]/46,XY,der(22)t(1;22)(q12; p11.2)[2].

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