Which characteristics can be inherited?

a. the length of hair in a human

b. the ability to play piano

c. ability to roll the tongue

d. the appetite of a puppy

C) Ability to roll the tongue is inherited.
Length of hair is conditional upon the environment, not necessarily genetics.
Ability to play piano is taught not passed through genetics.
Appetite of a puppy depends on nutrition amount.

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Wikipedia aswell can be used to solve the following questions