Answer:
because the sperm fertilizes the egg and creates the zygote thing
DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.
When i say apes i mean monkeys
First question: tailbones, how other animals evolved
Second question: apes had tailbones, other animals have evolved.
Third Question: Both humans and apes had tailbones, shows that evolution does exist.