BIOL 2200 Exam 1 Questions and Verified Answers | Passed | A+

chapter 22 : natural selection The theory of evolution through natural selection is considered a scientific theory because __________. : All of the listed answers are correct.: - it is broad enough in scope to explain many observations -it is supported by a massive body of evidence from many disciplines -it is general enough to provide many testable hypotheses An adaptation is : a trait that gives an organism a reproductive advantage in the current environment 2 EXP: Evolutionary adaptations are inherited characteristics that enhance an organism's ability to survive and reproduce in a particular environment. evolution : descent with modification. change genetic comp of pop b/t generations. natural selection 4 postulates : -many offspring produced, not all survive (limited resources) - traits vary among individuals w/in pop and can be heritable (patterns bt parents and offspring) - some heritable traits provide benefits/ advantages in environment - advantageous traits give higher fitness (survival and reproduction) so become more common 3 Individuals experience selection : populations evolve Which of the following statements best describes Darwin's theory of evolution by natural selection? : Darwin's theory emphasized that populations vary and change over time