Use the phylogenetic tree to the right to determine
which statement below is true
Organisms A and F are not related
Organism E is more closely related to
organism than organism F
Organisms C and D are more closely related
than organisms A and B
DONE
в
A
Intro

What is the importantence of the carbon and nitretan cycles in the environment

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.

Predict the results of a two base insertion or deletion in a strand of dna that codes for a protien, how does this differ from a three base insertion or deletion?