5. Scientists recently described a unique family of chemotactile receptors (CRs) that allows for touch-taste sensation in octopus. To identify this new type of receptor, RNA-sequencing was used to study the gene expression profiles in various tissues. A. How could the investigators target mRNA (over ribosomal and other noncoding RNAs in the cell) for cDNA synthesis? B. In order to make cDNA, which three enzymes would be needed? eye skin brain Co sucker sensory epithelium statocyst olfactory organ van Giesen et al., 2020, Cell 183, 594-604 -10123 expression brain eye skin statocyst sucker olfactory org sensory ep C. Figure A visually represents the expression profile of mRNA molecules. In what tissue are transcripts encoding CRs the most enriched? D. Do you predict that in addition to mRNA, CR proteins are also enriched in this tissue? Explain your answer. NompC Touch rece CR776 CR986 CR989 CR990 CR828 CR992 CR840 CR110 CR829 CR041 CR918 CR522 CR111 CR737 chemotactile receptors (CRS)

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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.