Which scenario is an example of speciation? A. Houseflies from a certain region migrate and interbreed with a different housefly population in a neighboring area.
B. A river separates members of a salamander population that used to occupy the same geographical area.
C. A disease ravages a large fox population, killing all members that did not have a genetic resistance to the disease.
D. Certain members of a human population have more offspring than others.

Scientists studied reproduction in the new zealand mud snail to answer the question, “are there benefits to reproducing sexually or asexually? ” which of these hypotheses would least likely aid the scientists as they worked to answer the question? sexual reproduction is advantageous over asexual reproduction because it reduces the rate of mutation accumulation. asexual reproduction is advantageous over sexual reproduction because it allows the snails to produce more offspring. sexual reproduction is advantageous over asexual reproduction because it allows for snails to have increased genetic variation. asexual reproduction is advantageous over sexual reproduction because it decreases the snails’ need for social