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The phenotype can be divided into two classes:
the Qualitative traits and the Quantitative traits. Here we will focus on the quantitative ones.
the Qualitative traits and the Quantitative traits. Here we will focus on the quantitative ones.
The quantitative traits are controlled by many genes, and the distribution of the phenotypes are usually continuous, such as the height of a crop, the hair color of human, or the weight of animals. The specific locations on chromosomes affecting a quantitative trait are called the quantitative trait loci (QTLs).
With the advance of the sequencing technology (ex: the advent of NGS), there are more and more researches detecting QTLs (i.e. QTL mapping) to assist breeding in agriculture. However, mapping QTLs precisely needs not only the advanced sequencing technology, but also the good phenotyping method and the good statistical method.
Therefore, the students or the researchers should have the knowledge about phenotyping, molecular biology, and statistics.
Edited by Jeff Chu
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