Lamarck suggested that animals evolved in the process of evolution by acquired characteristics. which one of the following statements best describes lamarck's suggestion?

a.
some giraffes use their long necks to hunt animals that live in holes.

b.
giraffes with the acquired characteristic of long necks pass on this trait to their offspring.

c.
all offspring will have longer necks than their parents.

What did hunter gathers do to alter 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.

Astudent analyzed ears of corn that demonstrated two traits in the f2 kernels, purple or white colors and smooth on wrinkled shapes. a tabulation of 135 individual kernels gave the following results: purple and smooth = 75 white and smooth = 28 purple and wrinkled = 24 white and wrinkled = 8 what would be the only phenotype present in the f1 ger