SAT Subject Test in Biology › Other Evolution Principles
Which of the following is an example of founder effect?
A new animal has been discovered in the rainforest. It is very similar in appearance to a known species, and has similar anatomy and dietary patterns; however, it cannot mate with the known species to produce viable offspring.
Given only the above information, which of the following statements is correct?
Which of the following does not contribute to evolution?
A bat's wing and a bird's wing are considered __________.
Which of the following changes is most likely to increase the evolutionary fitness of an organism?
A farmer has 1000 chickens. A disease is introduced into the population that infects almost all of the chickens. The farmer loses 500 chickens to this disease. The chickens that were infected but didn't die produce fewer eggs than the chickens that were never sick, so generations later, there are more chickens that are immune to the disease than chickens who can be infected with the disease. A few generations of chickens later, the genetic diversity of the chickens is drastically reduced. What evolutionary processes are at play?