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Science Clinic => Biology => Topic started by: bb on Mar 26, 2020

Title: If one compares the base sequences of related genes from different species, one is likely to find ...
Post by: bb on Mar 26, 2020

Question 1

Which of the following contains the three posttranscriptional modifications often seen in the maturation of mRNA in eukaryotes?
◦ 5'-capping, 3'-poly(A) tail addition, splicing
◦ 3'-capping, 5'-poly(A) tail addition, splicing
◦ heteroduplex formation, base modification, capping
◦ 5'-poly(A) tail addition, insertion of introns, capping
◦ removal of exons, insertion of introns, capping

Question 2

If one compares the base sequences of related genes from different species, one is likely to find that corresponding ________ are usually conserved, but the sequences of ________ are much less well conserved.
◦ chaperons; exons
◦ introns; chaperons
◦ introns; exons
◦ exons; introns
◦ introns; proteins

Title: If one compares the base sequences of related genes from different species, one is likely to find ...
Post by: owenfalvey on Mar 26, 2020

Answer 1

5'-capping, 3'-poly(A) tail addition, splicing

Answer 2

exons; introns