All living organisms are linked to one another because
(a) they have the common genetic material of the same type
(b) they share common genetic material but to varying degrees
(c) all have a common cellular organization
(d) All of the above
The correct option is (b) They share common genetic material but to varying degrees.
Explanation: In fact, the whole theory of evolution is based on the similarity of genetic materials which indicates common ancestry for living organisms. Variations in the similarity of genetic material give biodiversity which we see all around us.