Draw a line representing mRNA that has already been processes (introns removed, cap and tail added). Label the 5’ cap on left end and polyA tail. An inch from the left add the start codon (AUG). An inch from the right add one of the three stop codons. Label the 5’ UTR and 3’ UTR (untranslated regions).
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.
- Draw a line representing mRNA that has already been processes (introns removed, cap and tail added). Label the 5’ cap on left end and polyA tail.
- An inch from the left add the start codon (AUG).
- An inch from the right add one of the three stop codons.
- Label the 5’ UTR and 3’ UTR (untranslated regions).
- In the middle of your mRNA, draw two ovals representing the large and small subunits of the ribosome bound to the mRNA. Make these large enough that you can add the details below. In between the two subunits indicate the ribosomal A, P and E sites in the correct place. Put an arrow on top of ribosome to show direct of translation
- Draw at least 3 tRNA on your picture in the correct locations: an empty one (no amino acid) exiting the ribosome, a charged tRNA with a small circle on the 3’ end to indicate an amino acid, and a tRNA with several small circle representing amino acids in a chain (polypeptide).
- Indicate the amino end of polypeptide with an “N”. (Remember each amino acid has polarity but they don’t have 5’ and 3’ carbons, they have amino and carboxylic acid ends.)
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