Exam 2 Asu Bio 340 General Genetics Questions
And Answers With Verified Solutions Graded A+
Latest Update 2025.
components of a nucleotide - ANSWER phosphate group, 5 carbon sugar, nitrogenous base
types of nitrogenous bases - ANSWER purines and pyrimidines
1' (deoxyribose carbon atom numbering system) - ANSWER the carbon attached to the
nitrogenous base
2' (deoxyribose carbon atom numbering system) - ANSWER the deoxy carbon - only hydrogens
attached
3' (deoxyribose carbon atom numbering system) - ANSWER carries the hydroxyl group
4' (deoxyribose carbon atom numbering system) - ANSWER binds to the O which binds to the
1' to make the ring
5' (deoxyribose carbon atom numbering system) - ANSWER carries the phosphate group
DNA strand polarity - ANSWER Each strand of DNA has distinct 5' and 3' ends creating
polarity within the backbone.
5' will have an -OH or phosphate group bonded to C-5' of the sugar, while the 3' end has a free -OH on C-
3 of the sugar.
Rules to apply - ANSWER pyrimidine vs purine
A=T, C=G
3 hyrdogen bonds (C-G), 2 hydrogen bonds (A-T)
5' carbon vs 3' carbon
strands are anti-parallel
Chargaff's Rule - ANSWER ratios are 1:1
A=T and C=G
must be double stranded
semiconservative replication - ANSWER Method of DNA replication in which parental strands
separate, act as templates, and produce molecules of DNA with one parental DNA strand and one new
DNA strand
And Answers With Verified Solutions Graded A+
Latest Update 2025.
components of a nucleotide - ANSWER phosphate group, 5 carbon sugar, nitrogenous base
types of nitrogenous bases - ANSWER purines and pyrimidines
1' (deoxyribose carbon atom numbering system) - ANSWER the carbon attached to the
nitrogenous base
2' (deoxyribose carbon atom numbering system) - ANSWER the deoxy carbon - only hydrogens
attached
3' (deoxyribose carbon atom numbering system) - ANSWER carries the hydroxyl group
4' (deoxyribose carbon atom numbering system) - ANSWER binds to the O which binds to the
1' to make the ring
5' (deoxyribose carbon atom numbering system) - ANSWER carries the phosphate group
DNA strand polarity - ANSWER Each strand of DNA has distinct 5' and 3' ends creating
polarity within the backbone.
5' will have an -OH or phosphate group bonded to C-5' of the sugar, while the 3' end has a free -OH on C-
3 of the sugar.
Rules to apply - ANSWER pyrimidine vs purine
A=T, C=G
3 hyrdogen bonds (C-G), 2 hydrogen bonds (A-T)
5' carbon vs 3' carbon
strands are anti-parallel
Chargaff's Rule - ANSWER ratios are 1:1
A=T and C=G
must be double stranded
semiconservative replication - ANSWER Method of DNA replication in which parental strands
separate, act as templates, and produce molecules of DNA with one parental DNA strand and one new
DNA strand
