Week 6 BIO Quiz.

Two populations of crickets have stopped interbreeding over time, although they reside in the same geographic region. What is one possible explanation? Question 1 options: They have experienced reinforcement because of reconnection at a hybrid zone. They have developed a temporal isolation, a kind of prezygotic barrier. Autopolyploidy has occurred, and the species are separated by a sympatric barrier. Save Question 2 (5 points) "Survival of the fittest," or the reproductive advantage in individuals who inherit traits that help it adapt to a changing environment was something Darwin called ________. Question 2 options: inheritance natural selection adaptation Save Question 3 (5 points) Which of the following traits may be acted on by natural selection? Question 3 options: Enzyme activity Body shape Rate of ontogenetic development Instinctual behavior All of the above may be acted upon as long as they are controlled by genes Question 4 (5 points) The only source of new alleles in species is _________________. Question 4 options: mitosis This study source was downloaded by from CourseH on :21:02 GMT -06:00 mutation speciation genetic drift sexual reproduction Save Question 5 (5 points) Population genetics is the study of ________. Question 5 options: how allele frequencies in a population change over time populations of cells in an individual the rate of population growth how genes affect embryological development Save