genetic biology 1) In the future, life is found on moons of Jupiter and Saturn:
ID: 148522 • Letter: G
Question
genetic biology
1) In the future, life is found on moons of Jupiter and Saturn: Enceladus, Callisto, and Ganymede. Curiously, although the genetic material of these alien life forms is similar to DNA it uses different nucleotides with some unusual properties, as described below. There is an RNA equivalent as well in both places. Assume replication proceeds in a similar fashion to that on Earth (including unidirectional polymerases, unless stated otherwise) (7 points total) (i) Enceladus. The genetic material is single-stranded (ii) Callisto. Here the genetic material is double stranded but a different type of nucleotide is used and the polarity of both strands is 5' to 3' (iii) Ganymede. Here the genetic material is more like that on earth with antiparallel nucleotide chains. However, polymerases have evolved that can work both 3 to 5' as well as 5' to 3Explanation / Answer
The answers are here:
1)For enceladus we have DNA LIGASE
because it is single stranded which joins the DNA strands with the help of catalyzing the formation of a phosphodiester bond.
B)For Callisto we will have DNA POLYMERASE 1 because it shows the polarity from 5' to 3' which helps in the replication of DNA very easily
C)For Ganymede we have DNA POLYMERASE 3 because it is double strangded and has polarity in both the direction which is from 5' to 3' and then in reverse from 3' to 5'
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.