Chapter 6 Flashcards
Aboreal Adaptation
A suite of physical traits that enable an organism to live in trees.
Dietary Plasticity
A diet’s flexibility in adapting to a given environment
Parental Investment
The time and energy parents expend for their offspring’s benefit
Opposable
Refers to primates’ thumb, in that it can touch each of the four fingertips, enabling a grasping ability
Power grip
A fistlike grip in which the fingers and thumbs wrap around an object in opposite directions
Precision Grip
A precise grip in which the tips of the fingers and thumbs come together, enabling fine manipulation
Preadaptation
An organism’s use of an anatomical feature in a way unrelated to the feature’s original function
Diurnal
Refers to those organisms that normally are awake and active during daylight hours
Rhinarium
The naked surface around the nostrils, typically wet in mammals
Dental formula
The numerical description of a species’ teeth, listing the number , in one quadrant of the jaws, of incisors, canines, premolars, and molars
Loph
An enamel ridge connnecting cusps on a tooth’s surface
Bilophodont
Refers to lower molars, in Old World monkeys, that have two ridges
Y-5
Hominoids’ pattern of lower molar cusps
Tooth Comb
Anterior teeth (incisors and canines) that have been tilted forward, creating a scraper
Canine-premolar honing complex
The dental form in which the upper canines are sharpened against the lower third premolars when the jaws are opened and closed
