Question

multiple choice question
which of the following statements is true in regard to how scientists apply the concepts of reproductive isolation and biological species?
if members of different species can hybridize and produce viable, fertile offspring in any conditions (artificial or natural) and at any frequency (rarely or often) they should be considered members of the same species.
members of different species may be able to successfully hybridize under artificial conditions, but ordinarily do not do so in natural conditions.
the ability to hybridize is irrelevant as long as the species use different ecological niches.

Explanation:

According to the biological species concept, members of the same species can interbreed and produce viable, fertile offspring. Different species usually do not interbreed in nature but may hybridize under artificial conditions. The ability to hybridize is related to species - identity and ecological niches are not the sole determinant of species - boundaries in terms of reproductive isolation.

Answer:

Members of different species may be able to successfully hybridize under artificial conditions, but ordinarily do not do so in natural conditions.