Questions tagged [haplotypes]

Genetic code involving inherited DNA present as a single copy, which for eukaroyotes is the mitochondrion and in bacteria is the complete genome.

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1 vote
1 answer
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Given SNP-Chip data for a population, what tool should I use to reconstruct haplotypes?

I think Eagle or haploSep will do the job of reconstructing haplotype data, but I'm not sure what the 'standard' or best practice tool to use is. I have a VCF/PLINK format file of ~8,000 individuals ...
2 votes
1 answer
65 views

What is the best way to process yeast genomes?

I have obtained several hundred raw, unassembled yeast genomes from NCBI and I am looking for advice on how to process the genomes for downstream analysis. I have a reference genome (S288C) to use for ...
1 vote
0 answers
48 views

Weird data in VCF file

I am using GATK HaploTypeCaller for SNP calling. I have 300 samples. As far as I understand that if a sample is missing a SNP it should be denoted by ./., however, I am getting a lot of values like 0/...
3 votes
1 answer
79 views

Imputing small region of the genome

If I'm looking for a specific SNP in my SNP-Chip data and it isn't there, are there any tools that let me quickly impute that SNP from surrounding SNPs rather than running a lengthy 'whole chromosome' ...
2 votes
1 answer
626 views

Program to make a haplotype network for a specific gene

Currently my lab manually uses pop art to make the network after using PHASE to id an individual's alleles. I would like to know how to generate the graph structure (i.e. the links between vertices), ...
1 vote
0 answers
53 views

How to calculate switch errors on plink formatted phased genotype data?

everyone! I'm working with haplotype inference algorithms in pedigree genotype data, and I would like to know if there is a tool or script to calculate switch errors on phased pedigree data (Plink ...
1 vote
0 answers
21 views

Why does gene count increase drastically after scaffolding with Hi-C data?

I have a conceptual question. I have a diploid, outcrossing plant genome assembly of ~1.1 Gb size. The original assembly is generated from PacBio reads. After genome annotation with the ...
1 vote
1 answer
143 views

Generate an appropriate output from DNaSP6 to Arlequin program

I am performing a haplotype and nucleotide diversity analysis of my Sanger sequences (from Watermelon mosaic virus coat protein region) using the Arlequin program. My aim is to see the probability ...
1 vote
1 answer
71 views

Using a phased reference assembly to phase sample genotypes

I've been trying without success to phase the variants of about 30 samples in a 5Mb non-recombining region. I have a phased genome assembly of the region but so far I have not been successful in using ...
0 votes
0 answers
165 views

How to plot a graph of Linkage disequilibrium with limited information

I have a snp information in an excel file and I used SNPstat to do some analysis. But I also need a plot of LD for these snps. But my file is not formatted as the most programs required (.ped, hapmap, ...
0 votes
1 answer
30 views

How do I infer someone's haplotype of a gene from data on several of the gene's SNPs?

For a a few SNPs from given gene, I know there happen to be several haplotypes that most of the population has. But from a person's data on those SNPs, we have two alleles at each SNP, so it's not ...
1 vote
3 answers
50 views

Genotyping technologies do not maintain phase?

Why exactly does genotyping not maintain phase? I guess I'm more confused on what's the difference between sequencing and genotyping, and as a result how phase is maintained in one, but not the other. ...
5 votes
1 answer
369 views

Searching tool to calculate phase/switch error rate

I'm looking for a tool which, given a truth vcf file and a test vcf file, calculates the phase/switch error rate. I performed phasing of a vcf using WhatsHap and want to compare the outcome to some ...
8 votes
1 answer
142 views

Highly heterozygous reads mapping

I have short (67bp) Hi-C reads from a highly heterozygous organism (~15% between-haplotype SNP divergence) and I have both reference haplotypes. I wanted to try and compare different haplotyping ...
5 votes
3 answers
123 views

Sampling haplotypes

I am trying to simulate different genome of peoples, I have data (VCF files) of various genes from the 1000K Gene project. I want to simulate different whole genomes i.e generate a new population by ...
1 vote
0 answers
1k views

How to format the Nexus file to create geographical maps with haplotypes in PopArt?

I'm trying to create a map in PopArt that allows me to visualise the distribution of several species. These are my Traits (=species) and GeoTags blocks: ...
1 vote
1 answer
436 views

How to download SNP data from specific regions, population and positions?

I am totally new in Bioinformatics and I would like to apply my knowledge in feature selection on the tag SNP problems. To do that, I've read a lot of papers and books in order to understand the main ...
5 votes
1 answer
118 views

How to convert the given mathematical computation (on biological problem) to mathematical fomula, equation?

I have crossposted this question in maths StackExchange. The problem is dominantly mathematical (this question) but the application of the problem is mainly biological. Hoping that people in this ...
5 votes
3 answers
501 views

How to indicate the END of a haplotype block in VCF?

In VCF I know how to indicate that two genotypes are in the same phase by using consecutive "0|1" and "1|0" genotype fields, for example. However, how do I deal with the case that the first two ...