BIO370Y5 Lecture Notes - Lecture 6: Zygote, Prophage, Plasmid
Document Summary
Can make a conjugal union with females, which can transfer materials over from male to female: females can"t do what males do, males + females = highest fertility rate. The f factor (f+) gets transferred to females and they receive the fertile maleness to them: within an hour you can have 5-90% of the population infected with the maleness. Chromosomal transfer is minor: all recombination occurs due to hfr bacteria (small population) in the male population. Sex factor is gone by the use of acridine orange, males thus get converted to females. Properties of hfr (high frequency of recombinants) male bacteria. Hfr pop up in f+ populations and combine with bacterial: basically the hfr circular chromosome is combined with the bacterial circular chromosome. Hfr begins its transfer at a specific 0 site (origin site), but each hfr has a different 0 site.
