Gene<span>. A </span>segment<span> of a </span>DNA<span> molecule (a sequence of bases) that </span>codes for a particular<span> protein and determines the </span>traits<span> (phenotype) of the individual. A </span>gene<span> is the basic unit of heredity in a living organism</span>
the inner most layer of the earth is known as the core it is divided into inner core and outer core . it comprises of a high concentration of nickel and iron. here is your answer thanku