Human polymorphism around recombination hotspots.
نویسنده
چکیده
Meiotic recombination in humans is thought to occur as part of the resolution of DSBs (double-strand breaks). The repair of DSBs potentially leads to biases in DNA repair that can distort the population frequency of the alleles at single-nucleotide polymorphisms. Genome-wide variation data provide evidence for a weak fixation bias in favour of G and C alleles that is strongest at the centre of inferred recombination hotspots.
منابع مشابه
A novel method with improved power to detect recombination hotspots from polymorphism data reveals multiple hotspots in human genes.
We introduce a new method for detection of recombination hotspots from population genetic data. This method is based on (a) defining an (approximate) penalized likelihood for how recombination rate varies with physical position and (b) maximizing this penalized likelihood over possible sets of recombination hotspots. Simulation results suggest that this is a more powerful method for detection o...
متن کاملRecombination hotspots rather than population history dominate linkage disequilibrium in the MHC class II region.
Recombination, demographic history, drift and selection influence the extent of linkage disequilibrium (LD) in the human genome, but their relative contributions remain unclear. To investigate the effect of meiotic recombination versus population history on LD, three populations with different demographic histories (UK north Europeans, Saami and Zimbabweans) were genotyped for high-frequency si...
متن کاملFine-scale maps of recombination rates and hotspots in the mouse genome.
Recombination events are not uniformly distributed and often cluster in narrow regions known as recombination hotspots. Several studies using different approaches have dramatically advanced our understanding of recombination hotspot regulation. Population genetic data have been used to map and quantify hotspots in the human genome. Genetic variation in recombination rates and hotspots usage hav...
متن کاملApplication of coalescent methods to reveal fine-scale rate variation and recombination hotspots.
There has been considerable recent interest in understanding the way in which recombination rates vary over small physical distances, and the extent of recombination hotspots, in various genomes. Here we adapt, apply, and assess the power of recently developed coalescent-based approaches to estimating recombination rates from sequence polymorphism data. We apply full-likelihood estimation to st...
متن کاملFactors influencing recombination frequency and distribution in a human meiotic crossover hotspot.
Little is known about the factors that influence the frequency and distribution of meiotic recombination events within human crossover hotspots. We now describe the detailed analysis of sperm recombination in the NID1 hotspot. Like the neighbouring MS32 hotspot, the NID1 hotspot is associated with a minisatellite, suggesting that hotspots predispose DNA to tandem repetition. Unlike MS32, crosso...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Biochemical Society transactions
دوره 34 Pt 4 شماره
صفحات -
تاریخ انتشار 2006