What happened to the new polypeptide after the point substitution mutation occurred?

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.

As an asteroid comes close to earth, it's name will change to? apex

Which of the following statements about genes and traits is true? a single trait can be controlled by multiple genes. a single gene can control a single trait. a single trait can alter multiple genes. a single gene can influence multiple traits.