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Chromosome 6 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. People normally have two copies of this chromosome. Chromosome 6 spans nearly 171 million base pairs (the building material of DNA ) and represents between 5.5 and 6% of the total DNA in cells .
Human chromosome 6 gene stubs (415 P) Pages in category "Genes on human chromosome 6" The following 200 pages are in this category, out of approximately 779 total.
5-HTTLPR (serotonin-transporter-linked promoter region) is a degenerate repeat (redundancy in the genetic code) polymorphic region in SLC6A4, the gene that codes for the serotonin transporter. Since the polymorphism was identified in the middle of the 1990s, [ 1 ] [ 2 ] it has been extensively investigated, e.g., in connection with ...
Genomic structural variation is the variation in structure of an organism's chromosome, such as deletions, duplications, copy-number variants, insertions, inversions and translocations. Originally, a structure variation affects a sequence length about 1kb to 3Mb, which is larger than SNPs and smaller than chromosome abnormality (though the ...
RCCX is a complex, multiallelic, and tandem copy number variation (CNV) human DNA locus on chromosome 6p21.3, a cluster located in the major histocompatibility complex (MHC) class III region. [ 1 ] [ 2 ] CNVs are segments of DNA that vary in copy number compared to a reference genome and play a significant role in human phenotypic variation and ...
[6] [7] Some research studies may refer to this gene variation as a C/T SNP, [2] while others refer to it as a G/A polymorphism in the promoter region, thus writing it as, e.g., −1438 G/A or 1438G>A. [8] [9] [10] As of 2008, meta-analysis of research studies indicates that people with the A-allele may have slightly elevated risk of schizophrenia.
Genetic variation is the difference in DNA among individuals [1] or the differences between populations among the same species. [2] The multiple sources of genetic variation include mutation and genetic recombination. [3] Mutations are the ultimate sources of genetic variation, but other mechanisms, such as genetic drift, contribute to it, as ...
Crossing over also accounts for genetic variation, because due to the swapping of genetic material during crossing over, the chromatids held together by the centromere are no longer identical. So, when the chromosomes go on to meiosis II and separate, some of the daughter cells receive daughter chromosomes with recombined alleles.