Domesticated chickens are the most abundant birds on earth. How is it that seemingly disadvantageous traits like their inability to fly well and their propensity to
lay large unfertilized eggs have managed to avoid being lost over the centuries?
A) These features allow chickens to be more fit in the wild, so they out compete
their rivals
B) Chickens and roosters look and act differently so they are able to divide
selection pressures
C) Humans have artificially selected these features in birds that they raise for
eggs and meat
D) The rate at which chickens have offspring allows them to overcome natural
selection