Contrast the sizes of the chromosomes of bacteriophage λ and t2 with that of e. coli.
bacteriophage λ has a chromosome with a size of about kb. t2 phage also has a kb. e. coli has a chromosome of about .
(a) 50
(b) 100
(c) 4200
(d) 1000
(e) 4.2
(f) 200

Bacteriophage λ has a chromosome with a size of about 4.2 kb. T2 phage also has a 200 kb. E. coli has a chromosome of about 4200 kb.

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.