Zip codes for Dallas County-Texas. Zip codes for the Dallas County-Texas metropolitan area (as defined by the United States Census Bureau).
A quantitative trait locus (QTL) is a section of DNA (the locus) that correlates with variation in a phenotype (the quantitative trait).The QTL typically is linked to, or contains, the genes that control that phenotype.he simplest method for QTL mapping is analysis of variance (ANOVA, sometimes called marker regression) at the marker loci. In this method, in a backcross, one may calculate a t-statistic to compare the averages of the two marker genotype groups.
Axolotls are members of the Ambystoma tigrinum (Tiger salamander) complex, along with all other Mexican species of Ambystoma. Their habitat is like that of most neotenic speciesâa high altitude body of water surrounded by a risky terrestrial environment. These conditions are thought to favor neoteny.he axolotl is carnivorous, consuming small prey such as worms, insects, and small fish in the wild. Axolotls locate food by smell, and will snap at any potential meal, sucking the food into their stomachs with vacuum force.