What is the most significant biological contribution do a male and a female to an offspring?

The most significant biological contributions of a male and a female to an offspring are their genetic material, which consists of DNA contained in sperm and eggs, respectively. The male contributes half of the offspring's genetic information through his sperm, while the female provides the other half through her egg. This genetic combination determines the offspring's traits, including physical characteristics and susceptibility to certain diseases. Additionally, the female typically provides an environment for early development, especially during gestation or incubation.