reads MRNA 2 3 4 exons Figure Q8-4 RNA-seq reads for a liver MRNA (Problem 8-16). The exon structure of the MRNA is indicated, with protein-coding segments ndicated in light blue and untranslated regions in dark blue. The umbers of sequencing reads are indicated by the heights of the ertical lines above the MRNA.
Gene Interactions
When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.
Gene Expression
Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.
You have just gotten back the results from an RNA-
seq analysis of mRNAs from liver. You had anticipated
counting the number of reads of each mRNA to deter-
mine the relative abundance of different mRNAs. But you
are puzzled because many of the mRNAs have given you
results like those shown in Figure Q8–4. How is it that dif-
ferent parts of an mRNA can be represented at different
levels?
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