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Related to sequences: Geometric sequences

se·quence

(sē'kwens),
1. The succession, or following, of one thing, process, or event after another; in dysmorphology, a pattern of multiple anomalies derived from a single known or presumed prior anomaly or mechanical factor.
2. The imposition of a paricular order on a number of items.
Synonym(s): anomalad (2) , complex (8)
[L. sequor, to follow]

sequence

/se·quence/ (se´kwens)
1. a connected series of events or things.
2. in dysmorphology, a pattern of multiple anomalies derived from a single prior anomaly or mechanical factor.
3. in molecular biology, DNA having a particular nucleotide pattern or occurring in a particular region of the genome.

amniotic band sequence  early rupture of the amnion with formation of strands of amnion that may adhere to or compress parts of the fetus, resulting in a wide variety of deformities.
gene sequence  the ordered arrangement of nucleotides into codons along the stretch of DNA to be transcribed.
oligohydramnios sequence  a group of anomalies, usually fatal shortly after birth, caused by compression of the fetus secondary to oligohydramnios, which may result from renal agenesis or other urinary tract defects or from leakage of amniotic fluid; infants have characteristic flattened facies (Potter facies), skeletal abnormalities, and often hypoplasia of the lungs.

sequence

(sē′kwəns, -kwĕns′)
n.
1. A following of one thing after another; succession.
2. An order of succession; an arrangement.
3. Biochemistry The order of constituents in a polymer, especially the order of nucleotides in a nucleic acid or of the amino acids in a protein.
tr.v. se·quenced, se·quencing, se·quences
1. To organize or arrange in a sequence.
2. To determine the order of constituents in (a polymer, such as a nucleic acid or protein molecule).

sequence

[sē′kwəns]
Etymology: L, sequi, to follow
an order of arrangement of objects or events, as the sequence of peptides in a protein molecule.

sequence

Medspeak
The order of performing a task.

Molecular biology
noun A heteromeric chain of similar, but not identical molecules—e.g., nucleotides (in a gene) or amino acids (in a protein).

verb To determine the order of a sequence.

Paediatrics
(1) An array of multiple congenital anomalies resulting from an early single primary defect of morphogenesis which unleashes a cascade of secondary and tertiary defects.
(2) A group of clinicopathologic consequences of the aberrant formation of one or more early embryologic structures.

sequence

Pediatrics Anomalad An array of multiple congenital anomalies resulting from an early single 1º defect of morphogenesis that unleashes a 'cascade' of 2º and 3º defects; a sequence is also defined as a set of clinicopathologic consequences of the aberrant formation of one or more early embryologic structures. See Dysmorphology.
Sequence types  
Malformation Incorrect formation of tissues
Deformation Abnormal forces acting on normal tissues
Disruption Breakdown of normal tissue
Note: The Pierre-Robin sequence is caused by 1º mandibular hypoplasia, which results in a tongue that is too small for the oral cavity and which drops back–glossoptosis, blocking closure of the posterior palatal shelf, resulting in a high arched U-shaped cleft palate Examples of sequences include athyroidotic hypothyroidism sequence, DiGeorge sequence, early urethral obstruction sequence, bladder exstrophy sequence, cloacal extrophy sequence, holoprosencephaly sequence, jugular lymphatic obstruction sequence, Kartagener syndrome/sequence, Klippel-Feil sequence, laterality sequence, meningomyelocele, anencephaly, iniencephaly sequence, occult spinal dysraphism sequence, oligohydramnios sequence, Rokitansky sequence, septo-optic dysplasia–de Morsier sequence, sirenomelia sequence

se·quence

(sē'kwĕns)
The succession, or following, of one thing or event after another.
[L. sequor, to follow]

se·quence

(sē'kwĕns)
1. Succession, or following, of one thing, process, or event after another.
2. Imposition of a particular order on several items.
[L. sequor, to follow]

sequence,

n the order of occurrence or performance.
sequence planning,
n a method of identifying all the various dental treatments that a patient will need and putting those treatments in the most logical and effective order.

sequence

the order in which monomers occur in polymeric molecules; the order of amino acids in a polypeptide chain or of nucleotides in nucleic acid.

autonomously replicating sequence
usually plasmids that replicate independently of chromosomal DNA.
coding s's
sections of DNA which code for the amino acids of a protein.
consensus sequence
a sequence of nucleotides that is always present in a large set of independently determined sequences. See also box.
enhancer sequence
in DNA transcription, an upstream cis-acting DNA sequence that enhances expression of a particular gene and forms part of a complex array of upstream sequences that control gene expression.
expressed s's
in eukaryotic pre-messenger RNA the noncoding sequences, also called intervening sequences or introns, are removed in the nucleus; the mRNA is transported to the cytoplasm where the exons are translated to a protein.
intervening sequence
see intron.
palindromic sequence
signal sequence
a collection of hydrophobic amino acid residues at the amino terminus of secretory or integrated membrane proteins that direct the protein to cell membranes, particularly endoplasmic reticulum where the proteins are modified, e.g. glycosylated, and the signal sequence is removed prior to secretion or integration of the protein into the lumen of the endoplasmic reticulum.
temporal sequence
in protein synthesis, is from the amino to the carboxyl end.
References in periodicals archive ?
In preliminary studies that used referential RNA viruses, we attempted to determine the nucleic acid sequences of SARS coronavirus, mouse hepatitis virus, West Nile virus, Japanese encephalitis virus, and dengue virus type 2 in culture supernatants (10-100 [micro]L) by using the RDV method.
the intrinsic nature of the system for recording the messages (forum), and the asynchronous nature of the communication, mean that sequences of interventions are retained in a peculiar fashion (as compared with those produced in face-to-face sessions).
They found that many people now living in Europe and eastern Africa possess three copies of the prodynorphin regulatory sequence, whereas people in India and China usually possess two copies of that sequence.
The vast majority of SNPs in the human genome are in noncoding sequences (> 91%).
454 Life Sciences is developing novel technologies for rapidly and comprehensively determining the nucleotide sequence,"whole genome sequencing," of entire genomes.
The FBI Laboratory has collaborated with other laboratories to compile an mtDNA population database containing the sequences from major racial or ethnic groups: Caucasians, Africans, Asians, Native Americans, and Hispanics.
Figure 1 shows the initial gray iron charge sequence for the melting furnaces along with the respective melting temperatures for the materials.
Gene-IT's innovative sequence search technology provides relevant answers to questions about the human genome asked by scientists and attorneys today, and by clinicians and physicians in the future.
pestis Orientalis-type multiple spacer type sequences in Justinian and medieval specimens (5), we now have cumulative evidence using 2 different molecular approaches that Y.
The sequence was published in the 1 April 2004 issue of Nature, along with more than 30 papers analyzing the results relative m the human and mouse genomes published simultaneously in the April 2004 issue of Genome Research.
Sequence analysis of the outer membrane protein A (ompA) gene is the most accurate method for identifying all known genotypes (1).
Current technologies are able to produce the sequence of a mammalian-sized genome of the desired data quality for $10-50 million; the goal of this initiative is to reduce costs by at least four orders of magnitude, so that a mammalian-sized genome could be sequenced for approximately $1,000.