armpit effect造句

• There has been much controversy about the armpit effect.
• But the armpit effect has been difficult to demonstrate and some experts dismissed it as impossible.
• In the armpit effect _ an animal uses only itself as a reference not the look or smell of family members.
• Biologists say the logic behind the armpit effect is that some characteristics, including smell, should reflect an animal's genetic makeup.
• In general, the armpit effect seems to exist and to be beneficial to the species concerned because it lessens the chance of inbreeding.
• Somehow though, the peacocks recognized their kin and tended to display with them _ something researchers say might now be chalked up to the armpit effect.
• Other research suggesting that humans may use the armpit effect include studies in small, closed religious groups showing that people tend to avoid marrying genetically similar people.
• Never having smelled relatives before, the hamsters, researchers say, appear to be using their own body odor as a reference for what family smells like, exactly as the armpit effect predicts.
• Dr . Paul Sherman, behavioral ecologist at Cornell, who was not involved with the new study but has looked for the armpit effect in ground squirrels, said, " This is exciting.
• The "'armpit effect "'in biology is a hypothesis that an individual learns to identify closely related individuals by their odor, comparing it to its own smell for phenotype matching.
• In addition, those couples that were more genetically dissimilar also tended to have fewer miscarriages, suggesting that humans do avoid inbreeding _ perhaps with the help of the armpit effect _ and for good reason.
• Some biologists said the new work suggested that the armpit effect _ in which animals can compare not only their own smells, but appearances or sounds to that of others _ could be widespread among animals, perhaps even humans.
• "This is the most convincing demonstration that I've ever seen of the armpit effect, " said Dr . Wayne Getz, mathematical biologist at University of California, who has looked for the armpit effect in honeybees.
• "This is the most convincing demonstration that I've ever seen of the armpit effect, " said Dr . Wayne Getz, mathematical biologist at University of California, who has looked for the armpit effect in honeybees.
• In fact, so great are the evolutionary benefits of being able to dole out goodies like food only to one's close relations or to avoid inbreeding by choosing mates from among nonrelatives that some biologists have predicted that animals may evolve the ability to recognize kin with just a sniff or a look _ a phenomenon known as the " armpit effect ."