#Question id: 14787
#Section 1: Engineering Mathematics
#Question id: 16862
#General Aptitude
#Question id: 3796
#Section 3: Genetics, Cellular and Molecular Biology
Incorrect pairing of bases during bacterial DNA replication occurs about once every 10^5 to 10^6 nucleotides, but the spontaneous mutation rate is only one error in 10^9 base pairs. What accounts for the difference?
#Question id: 14638
#Section 1: Engineering Mathematics
#Question id: 4143
#Section 3: Genetics, Cellular and Molecular Biology
It is possible to convert the Cys that is a part of Cys-tRNACys to Ala by a catalytic reduction. If the resulting Ala-tRNACys were added to a mixture of (1) ribosomes, (2) all the other tRNAs and amino acids, (3) all of the cofactors and enzymes needed to make protein in vitro, and (4) mRNA for hemoglobin, where in the newly synthesized hemoglobin would the Ala from Ala-tRNACys be incorporated?