Two genera of birds exist side-by-side on an island. Genus A is characterized by a few species of similar, genetic material. Genus B contains different species of birds with a wide variety of genetic traits. After a volcanic explosion changes the ecosystem, which genus has the highest probability of surviving the disaster?
a. Genus A, which contains well adapted species.
b. Genus B, which has greater genetic diversity and is more likely to have traits that confer an advantage in the new environment.
c. Genus A, which can serve as ancestors for the new species.
d. Genus B, because these species likely evolved from Genus A species in the past.