CHEGG The mechanism of macroevolution occurs by:. a. appearing in the fossil record of species with similar morphologies.
b. multiple acts of speciation on an ancestral organism.
c. weakening of barriers to reproductive isolation.
d. continuation of gene flow between populations.

Brian has a medical condition called cone dystrophy, which is a disorder of the cone cells in the eye. what symptoms would you expect brian to have? a. inability to see in the dark b. difficulty determining colors c. difficulty determining shapes and outlines d. inability to see in all light conditions