Question

36. Which one do you think would be more harmful. A mutation that changed the nucleotide sequence of an mRNA molecule, or a mutation that changed the nucleotide sequence of a DNA molecule? 5 points 37. All body cells have the same DNA complement yet all body cells do NOT contain the same proteins. How is this possible? 5 points 38. Consider a bacterial gene that is approximately 2100 nucleotides long. 3 Points Approximately how many amino acids would this gene code for? How many mRNA molecules will probably be transcribed from this gene? How many proteins will probably be made from this gene?

question 37 and 38 please

Answer 1

36. Mutation in DNA would be more harmful. Because, everytime it changes the sequence of mRNA, which causes altered expression every time.
37. The constitutive genes are expressed in the same way in all of the cells. Whereas cell specific genes are different in different cells. So, in different cells, certain genes are switched on and certain other genes are switched off by a differential gene regulation. This results in differential gene expression of genes in different cells.
38. Since 2100 nucleotides are there and to code one amino acid 3 nucleotide codon, 2100 / 3 = 700 amino acids will be expressed. But starting initiative sequences will occupy around some 50 nucleotides cannot code anything. So, around 2050 nucleotides only will code for around 683 amino acids
Since, one gene codes for one protein, one mRNA is made from this gene and one protein is expressed