In man and other vertebrates, hermaphrodism is always abnormal.
In other words, humanity begins its existence in a state of hermaphrodism.
hermaphrodism in man is always pathological, extremely rare, and when it exists nearly always incomplete.
Thus it is difficult to class animals according to their manner of reproduction; hermaphrodism is another block.
In these cases the hermaphrodism is clearly secondary in the sense that the hermaphrodites descend originally from gonochorists.
The most strongly marked and most complicated forms of hermaphrodism are found in mollusks, and chiefly in gasteropodes.
Such cases are not examples of hermaphrodism, but of incomplete embryological differentiation.
hermaphroditism her·maph·ro·dit·ism (hər-māf'rə-dī-tĭz'əm)
The presence of both ovarian and testicular tissue in an individual.