4. Which of the following describes how a large mouse population with high genetic diversity will most likely be affected by a sudden, significant environmental change?
(SB6d)
A. All of the individuals within the population will reproduce at a higher rate, leading
to a decrease in genetic diversity.
B. New traits will arise as a result of new selective pressures in the environment,
leading to an increase in genetic diversity.
C. Only those individuals best adapted to the new environment will survive and
reproduce, leading to a decrease in genetic diversity.
D. Only some individuals will develop traits to help them survive in the new
environment, leading to an increase in genetic diversity.

Which of the following statements is correct in hour our immune system responds to a potential pathogen? a. the adapted immune system will call on the innate immune system to destroy the pathogen. b. b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c. the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. d. the t-cells in the adapted immune systems are the first to recognize the pathogen vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a. antigen, antibody b. antibody, antigen c. antibody, antibiotic d. antibiotic, antibody