Treatment of sexual difficulties is usually based on which factors?

At the current time, which statement is true about our knowledge of whether animals can use humanlike language?

a) It has been clearly shown that animals cannot use humanlike language. b) All animal communication is instinctual and, thus, is not language. c) Only primates, like monkey and chimps, show any sign of language-like behavior. d) It is still unclear if animals can show humanlike language at any level of development.

The functional units of heredity that specify the structure of proteins are called genes

Indicate whether this statement is true or false.