For generations, neighborhood children had left their sexually reproducing multicolored bean collection unprotected and scattered on the sidewalk after play. One day, bean-eating birds invaded their neighborhood looking for food. The next generation of beans all were mostly gray (sidewalk-colored). What type of genetic evolution caused the generational shift?
A) ecological selection B) sexual selection C) artificial selection D) gene flow E) industrial melanism.
Neighborhood children always left their self-reproducing multicolored bean collection unprotected and scattered on the sidewalk after play. One day, bean-eating birds invaded their neighborhood looking for food. Which beans have a 'selective advantage?
A) Beans whose color matches the sidewalk. B) New types of beans arising from random mutation. C) Beans with gene flow or drift. D) The bean population's total color variation. E) Brightly colored beans.
Neighborhood children had always left their self-reproducing multicolored bean collection unprotected and scattered on the sidewalk after play. One day, bean-eating birds invaded their neighborhood looking for food. In this scenario, what is the 'selective pressure'?
A) the children B) bean color C) the sidewalk D) hungry birds E) sexual reproduction