Question

Which trait is determined entirely by heredity ?

Answer 1

Shape of the nose is entirely hereditary, as genes have nothing to do with any of the other attributes.

Answer 2

Answer: C. Shape of the nose

Heredity can be defined as a process by which the phenotypic and genetic features and characteristics are passed from the parent organism to the offsprings. The offsprings likely to resemble that of the parents. The shape of the nose is the phenotypic trait which can be passed from the parent to the offspring, hence is a characteristic feature of establishment of heredity.