Question

FOOD ANE

Which of the following pairs of traits are characteristic of all living
mammals
a sprawling quadrupedal locomotor pattern (legs to the side like one of the lizards that
you saw in class) and a body covered primarily in scales
fur or hair and mammary glands
mammary glands and homodont (as opposed to heterodont) teeth
ectothermy and a single bone to conduct sound from the ear drum to the middle ear

Answer 1

All living mammals have fur or hair and mammary glands.

Step-by-step explanation:

The pair of traits that are characteristic of all living mammals are fur or hair and mammary glands. Fur or hair is a defining characteristic of mammals, providing insulation, protection, and aiding in sensory functions. Mammary glands are also unique to mammals and produce milk to nourish their young.

Learn more about Characteristics of mammals