Johannes Vermeer The Little Street

Johannes Vermeer The Little StreetJohannes Vermeer Mistress and MaidUnknown Artist Vanitas Still LifeJohn Constable Wivenhoe Park
Shown clockwise from upper left, the Bluehead wrasse (Thalassoma bifasciatum), Northern shrimp (Pandalus borealis), Common slipper shell (Crepidula fornicate) and Whip coral goby (Bryaninops yongei) are examples of some animals that change their sex.
Most animals,, some animals live as one sex in part of their and then switch to the other sex, a phenomenon called sequential hermaphroditism. What remains a puzzle, according to Yale scientists, is why the phenomenon is so rare, since their analysis shows the biological "costs" of changing sexes rarely outweigh the advantages.
A report by Yale scientists in the March issue of The American Naturalist says that while this process is evolutionarily favored, like humans, have separate sexes — they are born, live out their lives and reproduce as one sex or the other. However