Most prokaryotes contain a single, circular dna molecule. true or false ?

Dna is colied into chromosomes in a cell

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi