The variation in the numbers of phage resistant mutants (among different E. coli cultures) seen in the Luria-Delbruck fluctuation test is a reflection of: Group of answer choices Differing levels of mutagenesis in the different cultures The differing media in which the bacterial cultures were grown The concentration of phages in the phage suspension added to the cultures The growth phase of the bacterial cultures, before being challenged with phage When the mutation(s) conferring resistance arose (i. e. early or late), during growth of the different cultures

Cramming you staying up all night to get a lot of work done for a class and is very stressful

Where are they though?

The return of the wolf to yellowstone national park will probably affect the bird population to some degree, not significantly. while wolves will hunt birds when necessary, they prefer to hunt larger prey. the bird population will most likely only be affected when hunting is scarce for the wolves. birds of prey will also probably not be affected as much as other birds who spend more time on the ground hunting for food as the tend to spend more time in the air or in trees since they do not need to stay on the ground for long due to the nature of the way they hunt.