Explain what has to happen to join 2 monosaccharide units into a disaccharide.

What type of cell is produced after fertilization occurs and the gametes combines ?

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

Which of the following is a testable hypotheses?