Which statement correctly describes the role of chance in evolution?
A. An allele that increases evolutionary fitness cannot be lost from a population by chance events.
B. The ultimate source of new alleles is mutation, random changes in the nucleotide sequences of an organism's DNA
C. Evolutionary change proceeds by an accumulation of changes that occur by chance.
D. None of the above
Answer:B
Which statement correctly describes the role of chance in evolution?
A. An allele that increases evolutionary fitness cannot be lost from a population by chance events. B. The ultimate source of new alleles is mutation, random changes in the nucleotide sequences of an organism's DNA C. Evolutionary change proceeds by an accumulation of changes that occur by chance. D. None of the above