There is some evidence that reptiles called cynodonts may have had whisker-like hairs around their mouths. If true, then what can be properly said of hair?
A) It is a shared derived character of mammals, even if cynodonts continue to be classified as reptiles.
B) It is a shared derived character of the amniote clade, and not of the mammal clade.
C) It is a shared ancestral character of the amniote clade, but only if cynodonts are reclassified as mammals.
D) It is a shared derived character of the mammals, but only if cynodonts are reclassified as mammals.
Laparoscopy. A lighted endoscope specialized for insertion into the abdomen, called a laparoscope, i
Photograph of the flea that transmits Yersinia pestis to cause bubonic plague, called the oriental r
Model for evidence-based clinical decision making.
Colon with diverticulosis. An inflamed or infected diverticulum is called diverticulitis.
A resonance tube, called a Helmholtz resonator, is used on the intake duct between the air filter ...
Example of Box-and-Whisker Plot