Organism: The Organism parameter defines the species of the + samples and the genome in which the variants are determined. Choosing an + Organism focuses the Samples parameter to the samples of that organism, + changing the subset available when forming your group.
+ +Samples: Sample sequences are accompanied by characteristics of + the sample -- where it was collected, the host, alignment statistics. By + default the group includes all samples from the Organism you chose; you may + narrow the group using those characteristics. At least two samples are + required, since polymorphism within a group of one is undefined.
+ +Read frequency threshold: An allele is called for a sample at a + location if that fraction of the sample's aligned reads support it. For + example, a sample with 10 reads at a location -- 6 A and 4 C -- is called A + at a threshold of 60% or less, and not called at 80%. This matters most for + diploid or aneuploid organisms, where heterozygous positions are expected + near 50%.
+ +Minor allele frequency: Among the qualifying calls at a location, + the minor allele frequency is the percent that are not the major allele. A + location is returned if that is at or above the value you specify. Use 0 to + find every variant location within the group.
+ +Percent samples with a base call: A location is only considered if + this fraction of your selected samples have a qualifying call there. With 20 + samples and a threshold of 75%, a location with fewer than 15 called samples + is ignored.
+ ]]> +Defining the region: Either choose a Chromosome, or enter a Genomic + sequence ID. A sequence ID you enter takes precedence; the Chromosome menu is + used when you leave the sequence box empty. Start and End restrict the region + further, and an End of 0 means "to the end of the sequence".
+ +Organism: The Organism parameter defines the species of the samples + and the genome in which the variants are determined. Choosing an Organism + focuses the Samples parameter to the samples of that organism.
+ +Samples: By default the group includes all samples from the Organism + you chose; you may narrow it using the sample characteristics. At least two + samples are required, since polymorphism within a group of one is undefined.
+ +Read frequency threshold: An allele is called for a sample at a + location if that fraction of the sample's aligned reads support it. This + matters most for diploid or aneuploid organisms, where heterozygous positions + are expected near 50%.
+ +Minor allele frequency: Among the qualifying calls at a location, + the minor allele frequency is the percent that are not the major allele. Use 0 + to find every variant location within the group.
+ +Percent samples with a base call: A location is only considered if + this fraction of your selected samples have a qualifying call there.
+ ]]> +Genes: Your gene IDs are resolved to each gene's genomic span, and + variants are returned by position within those spans. A variant in an intron or + UTR of one of your genes is therefore returned, since the span covers the whole + gene rather than only its coding sequence.
+ +Organism: The Organism parameter defines the species of the samples + and the genome in which the variants are determined. Choose the organism your + genes belong to.
+ +Samples: By default the group includes all samples from the Organism + you chose; you may narrow it using the sample characteristics. At least two + samples are required, since polymorphism within a group of one is undefined.
+ +Read frequency threshold: An allele is called for a sample at a + location if that fraction of the sample's aligned reads support it. This + matters most for diploid or aneuploid organisms, where heterozygous positions + are expected near 50%.
+ +Minor allele frequency: Among the qualifying calls at a location, the + minor allele frequency is the percent that are not the major allele. Use 0 to + find every variant location within the group.
+ +Percent samples with a base call: A location is only considered if + this fraction of your selected samples have a qualifying call there.
+ ]]> +Choosing the two groups: Set A and Set B must differ. Use the + sample characteristics to define each group, for example samples from two + different countries, or two different host phenotypes.
+ +Major allele frequency: Among the qualifying calls at a location + within one set, the major allele frequency is the percent carrying the most + common allele. Unlike the within-group searches, 100% is permissible here and + is the most stringent setting: the search identifies each set's major allele + first and then compares the two, so demanding unanimity within a set is a + sharper test rather than an impossible one. Lower the threshold to return + more locations.
+ +Read frequency threshold: An allele is called for a sample at a + location if that fraction of the sample's aligned reads support it. Each set + has its own threshold.
+ +Percent samples with a base call: A location is only considered + within a set if this fraction of that set's samples have a qualifying call + there.
+ ]]> +Organism: The Organism parameter defines the species of the + samples and the genome in which the variants are determined. Choosing an + Organism focuses the Samples parameter to the samples of that organism, + changing the subset available when forming your group.
+ +Samples: Sample sequences are accompanied by characteristics of + the sample -- where it was collected, the host, alignment statistics. By + default the group includes all samples from the Organism you chose; you may + narrow the group using those characteristics. At least two samples are + required, since polymorphism within a group of one is undefined.
+ +Read frequency threshold: An allele is called for a sample at a + location if that fraction of the sample's aligned reads support it. For + example, a sample with 10 reads at a location -- 6 A and 4 C -- is called A + at a threshold of 60% or less, and not called at 80%. This matters most for + diploid or aneuploid organisms, where heterozygous positions are expected + near 50%.
+ +Minor allele frequency: Among the qualifying calls at a location, + the minor allele frequency is the percent that are not the major allele. A + location is returned if that is at or above the value you specify. Use 0 to + find every variant location within the group.
+ +Percent samples with a base call: A location is only considered if + this fraction of your selected samples have a qualifying call there. With 20 + samples and a threshold of 75%, a location with fewer than 15 called samples + is ignored.
+ ]]> +Defining the region: Either choose a Chromosome, or enter a Genomic + sequence ID. A sequence ID you enter takes precedence; the Chromosome menu is + used when you leave the sequence box empty. Start and End restrict the region + further, and an End of 0 means "to the end of the sequence".
+ +Organism: The Organism parameter defines the species of the samples + and the genome in which the variants are determined. Choosing an Organism + focuses the Samples parameter to the samples of that organism.
+ +Samples: By default the group includes all samples from the Organism + you chose; you may narrow it using the sample characteristics. At least two + samples are required, since polymorphism within a group of one is undefined.
+ +Read frequency threshold: An allele is called for a sample at a + location if that fraction of the sample's aligned reads support it. This + matters most for diploid or aneuploid organisms, where heterozygous positions + are expected near 50%.
+ +Minor allele frequency: Among the qualifying calls at a location, + the minor allele frequency is the percent that are not the major allele. Use 0 + to find every variant location within the group.
+ +Percent samples with a base call: A location is only considered if + this fraction of your selected samples have a qualifying call there.
+ ]]> +Genes: Your gene IDs are resolved to each gene's genomic span, and + variants are returned by position within those spans. A variant in an intron or + UTR of one of your genes is therefore returned, since the span covers the whole + gene rather than only its coding sequence.
+ +Organism: The Organism parameter defines the species of the samples + and the genome in which the variants are determined. Choose the organism your + genes belong to.
+ +Samples: By default the group includes all samples from the Organism + you chose; you may narrow it using the sample characteristics. At least two + samples are required, since polymorphism within a group of one is undefined.
+ +Read frequency threshold: An allele is called for a sample at a + location if that fraction of the sample's aligned reads support it. This + matters most for diploid or aneuploid organisms, where heterozygous positions + are expected near 50%.
+ +Minor allele frequency: Among the qualifying calls at a location, the + minor allele frequency is the percent that are not the major allele. Use 0 to + find every variant location within the group.
+ +Percent samples with a base call: A location is only considered if + this fraction of your selected samples have a qualifying call there.
+ ]]> +Choosing the two groups: Set A and Set B must differ. Use the + sample characteristics to define each group, for example samples from two + different countries, or two different host phenotypes.
+ +Major allele frequency: Among the qualifying calls at a location + within one set, the major allele frequency is the percent carrying the most + common allele. Unlike the within-group searches, 100% is permissible here and + is the most stringent setting: the search identifies each set's major allele + first and then compares the two, so demanding unanimity within a set is a + sharper test rather than an impossible one. Lower the threshold to return + more locations.
+ +Read frequency threshold: An allele is called for a sample at a + location if that fraction of the sample's aligned reads support it. Each set + has its own threshold.
+ +Percent samples with a base call: A location is only considered + within a set if this fraction of that set's samples have a qualifying call + there.
+ ]]> +