What is the term for a new organism produced by one or more parents?

The term for a new organism produced by one or more parents is "offspring." This term encompasses any new individual that comes from the reproductive processes of one or more parent organisms. Offspring can arise from various reproductive methods, including sexual reproduction, where gametes from two parents unite, or asexual reproduction, where a single organism can produce a new organism.

In contrast, "gamete" refers specifically to the reproductive cells (sperm and eggs) that combine during fertilization to create a zygote, the first stage of a new organism's development. "Zygote" is the term for the fertilized egg that forms immediately after the sperm and egg unite, but it is not yet a fully developed organism. A "clone" refers to an organism that is genetically identical to its parent, typically produced asexually, and does not account for genetic variation that occurs in sexual reproduction. Thus, the broadest and most accurate term for any new organism resulting from parental reproduction is "offspring."