[BIO3170] - Final Exam Guide - Ultimate 110 pages long Study Guide!

• School: University of Ottawa
• Department: Biology
• Course: BIO 3170
• Professor: Odette Laneuville

Document Summary

Each species has a characteristic set of chromosomes. Prokaryotic genomes generally contain one large circular piece of dna referred to a bacterial. chromosome (not a true chromosome in the eukaryotic sense). Chromosomes sizes vary between 0. 6 and 10 mbp. Dna must be compacted: chromosome has an ~ 1. 6 mm circumference and e. coli dimensions are: ~1. 0 x 2. 0 mm. Ma(cid:374)(cid:455) (cid:271)a(cid:272)teria ha(cid:448)e s(cid:373)all (cid:272)ir(cid:272)ular dna stru(cid:272)tures (cid:272)alled (cid:862)plas(cid:373)ids(cid:863) (cid:449)hi(cid:272)h (cid:272)a(cid:374) (cid:271)e e(cid:454)(cid:272)ha(cid:374)ged a(cid:272)ross bacterial species. Plasmids: introduced by the molecular biologist j. lederberg (1952), are separate from, and can replicate independently of, the chromosomal dna, plasmid size varies from 1 to over 1,000 (kbp), not considered as part of the bacterial genome. Bacterial genome sequence - sequence analysis: coding dna accounts for ~90% of the total genome and ~10% is noncoding dna, for hu(cid:373)a(cid:374)s it"s the opposite situatio(cid:374), o(cid:374)l(cid:455) (cid:1005). (cid:1006)% (cid:272)odi(cid:374)g.