Language a. Vervet monkeys have specific alarm calls for several different predators. The vocalizations of vervet monkeys show syntax and grammar. Captive chimps and bonobos have learned artificial languages based on hand signs or plastic chips. Captive bonobos can learn to understand simple English language. In XY individuals without a functional androgen receptor a. ovaries develop.
Wolffian duct degenerates.
M llerian duct disintegrates. The force of mortality is defined as the number of individuals who die during a certain interval of age, divided by the number of individuals who died during the preceding interval. In most animal species, the force of mortality decreases with age. The average level of the force of mortality is called senescence. Human Characteristics List ten characteristics that distinguish humans from all other primates.