At the end of meiosis ii, how does the dna in each of the four new cells compare to the dna from the original cell?

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box

Why are common names a problem for scientist?