A biological species is defined as a
a) population or group of populations whose members have the potential to interbreed and produce fertile offspring.
b ) group of phenotypically indistinguishable organisms.
c ) group of organisms that are phenotypically similar and that share a high proportion of genes.
d ) population or group of geographically continuous populations whose members are phenotypically similar. e group of organisms that share an ancestral-descendant sequence.