Question

What is a phenotype?

A.
a population of organisms who share similar DNA

B.
the arrangement of genes responsible for determining traits

C.
a trait that is passed from the father to male offspring

D.
an observable expression of a trait in an organism

Answer 1

D. an observable expression of a trait in an organism

(Phenotype is the physical or biochemical characteristics resulting from the interaction of an organism's genotype and the environment.)