Which characteristic can be inherited?

a. ability to roll the tongue

b. the length of hair in a human

c. the ability to play piano

d. the appetite of a puppy

The correct answer would be A. ability to roll the tongue

Inherited traits are those which are controlled by the DNA. These traits are passed onto the offspring.

For example, hair color, skin color, a color of eyes, rolling of tongue et cetera.

The ability of a person to roll a tongue into a tube-like shape is considered as the dominant trait and inability to roll a tongue is considered as a recessive trait.

Other abilities such as muscle mass, length of hairs, karate, piano, life experience et cetera are not controlled by the DNA of a person and thus, they are not inherited from parents to the offspring.

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.