You are studying the expression of the gene that appears to be under the control of three different transcription-control regions during mouse embryonic development. which one of the following is the best method to use to determine when each of these regions are active in the developing mouse embryo?
a - dna affinity chromatography
b - polymerase chain reaction
c - dnase i footprinting
d - reporter gene assay

Write a paragraph at least 5 sentences “why all vaccinations should be mandatory”

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.

In each transformation of energy , some energy what?