B) Gametes result in new combinations of genes and have one half of the DNA of somatic cells.
Because gametes are formed through a type of cell division called meiosis.
Meiosis results in cells with half the number of chromosomes as the parent cell. Since DNA is organized into chromosomes, gametes end up with half the DNA content of somatic cells.
Additionally, meiosis shuffles and recombines genetic material, creating new combinations of genes in the gametes. This contributes to genetic diversity in offspring.