deletion
the loss of a chromosome segment
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...
Deletion
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Deletion
Deletion is a type of mutation involving the loss of genetic material. It can be small, involving a single missing DNA base pair, or large, involving a piece of a chromosome.
Narration Transcription ...
Deletion Studies
Eddy Rubin's group (Lawrence Berkeley National Laboratory, LBNL) uses the laboratory mouse to examine gene function, ...
Deletion
The loss of one or more bases or base pairs from a molecule of DNA.
Deletion mapping
The use of deletion mutations to determine the position of overlapping point mutations for fine structure mapping of a genetic locus.
deletion The loss of a chromosome segment without altering the number of chromosomes.
dendrites Short, highly branched fibers that carry signals toward the cell body of a neuron. PICTURE ...
deletion
(1) A deficiency in a chromosome resulting from the loss of a fragment through breakage. (2) A mutational loss of a nucleotide from a gene.
demography ...
Deletion Mapping
Deletions can be mapped by the same procedure used for point mutations. Simply cross pairs of deletion mutants and see if they produce progeny that can grow on E. coli strain K.
Deletions
Deletions are fragments of chromosomes that are missing. They are usually lethal when homozygous and cause abnormalities when heterozygous.
Radiation, viruses, chemicals, and unequal crossing-over may cause them.
Deletion A mutation resulting in the loss of normal DNA sequence. A deletion may be of any size from 1 nucleotide pair to the loss of most of a chromosome.
Deletion
A loss of part of the DNA from a chromosome; can lead to a disease or abnormality.
See also: chromosome, mutation
Deletion map ...
Deletion A type of mutation in which one or more base pairs are left out in DNA replication; also, the absence of one or more bases from a nucleotide sequence in a gene.
Microdeletion Syndromes(contiguous gene syndromes, segmental aneusomy)
Mosaicism: Somatic, gonadal, placental ...
Deletion
Loss of a segment of a chromosome as the genetical consequence of a transposition.
Related Terms:
Chromosome
The term was proposed by Waldeyer (1888) for the individual threads within a cell nucleus (gk. chroma, colour; soma, body).
deletion A mutation resulting from the loss of a small segment of DNA.
deletion mutant A mutation in which a base pair is deleted
delta Fan-shaped sediment deposit found at the mouth of a river.
1.1 Random deletions, insertions and point mutations
1.2 Directed deletions and point mutations
1.3 Gene silencing
1.4 Interference using transgenes ...
Chromosome deletions may also be associated with other syndromes such as Wilm's tumor.
Why is this deletion variant present in some populations in such high frequencies? HIV is, at most, a couple centuries old and, more likely, less than a hundred years old.
Additions and deletions
During copying a segment of DNA may be deleted or a new segment may be inserted. Typically this happens as a result of chromosome breakage or realignment.
INDEL Insertion/deletions (INDELS) are sequence variants where the Columbia (reference) polymorphism is an insertion relative to one ecotype and a deletion relative to another, different ecotype.
Name comes from the distinctive mewing cry of affected infants; characterized by significant mental deficiency, low birthweight, failure to thrive and short stature; deletion of a small section of the short arm of chromosome 5.
FRAMESHIFT MUTATION - A mutation (deletion or insertion, never a simple substitution) of one or more nucleotides but never a multiple of 3 nucleotides, which shortens or lengthens a trinucleotide sequence representing a codon; ...
A general term for a deletion, duplication, or inversion of a chromosome segment, or an interchange of segments which may be between homologous or non-homologous chromosomes.
Related Terms:
Deletion ...
(fluorescence in situ hybridization): One of the more modern methods in cytogenetics, which uses fluorescence-labelled chromosome-specific DNA, probes to detect translocations, inversions, deletions, ...
- A mutation caused by either the insertion or deletion of a number od nucleotide pairs in DNA, the effect of which is a change in the reading frame of codens in an mRNA molecule during the protein synthesis, ...
The condition of a cell or of an organism that has additions or deletions of a small number of whole chromosomes from the expected balanced diploid number of chromosomes.
Syndrome due to abnormalities of 2 or more genes that map next to each other on a chromosome; most often caused by a deletion that involves several contiguous genes.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
TATA box: A sequence found in the promoter (part of the 5' flanking region) of many genes. Deletion of this site (the binding site of transcription factor TFIID) causes a marked reduction in transcription, ...
Trisomy 21, exception leading to Downs syndrome
Sex chromosomes
Turner syndrome: monosomy X
Klinefelter syndrome: XXY
Translocation and deletion: transfer of a piece of one chromosome to another or loss of fragment of a chromosome.
Deletion mutation (← links)
Rice diet (← links)
Fimbriae bacterial (← links)
N protein (← links)
Reading frame open (← links)
Rearrangement (← links)
Actomyosin (← links)
Degp protease (← links) ...
A difference in restriction fragment length between individuals due to loss or gain of a restriction enzyme site due to point mutation, or insertion or deletion between consecutive sites. Normally detected by Southern blotting and probing.
 See also: DNA, Sequence, Chromosome, Gene, Trans
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