MATH 171 Midterm: MATH171 Washington State 171fa18Exam 2pract
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Second midterm examination a (100 points possible) key. The rnas grow in the 5" to 3" direction in prokaryotes but not eukaryotes. 6. which of the following are not among the significant sources of the extra dna present in eukaryotic genomes: introns, microsatellites, transposable elements, satellite dna, genes coding for the histones present in the nucleosome structure of the chromosomes. The two strands are paired by hydrogen bonds between the bases, with a pairing with t, and g pairing with c. (2) the two strands run in opposite orientations (one 5"-3", one 3"-5") with respect to each other. Backbone consists of alternating sugars and phosphate groups. (3) a. 1,2,3 b. 1,2 c. 1,3 d. 2,3 e. 1. Detailed band pattern present along the chromosome allows rearrangements such as inversions, deletions or duplications to be identified and described in detail: topoisomerase- enzyme which nicks dna, allowing unwinding during the replication process.
