What defines a biological clone?

A biological clone is defined as an organism or cell that is produced asexually from one ancestor, meaning it carries identical genetic material to that ancestor. This process results in offspring that are genetically identical to the parent, as there is no mixing of genetic material that occurs with sexual reproduction. Cloning can occur naturally, as in the case of identical twins, or can be artificially induced in a laboratory setting.

In contrast, the other options involve processes that introduce genetic variation or combine different genetic materials, which are not characteristic of cloning. For instance, producing an organism sexually typically involves genetic diversity and the combination of genes from two different parents, while hybrids result from the mating of two different species, which also leads to genetic variations. Genetically modified organisms (GMOs) involve the introduction of new traits through artificial means, but they are not necessarily clones of their parent organisms. Thus, the most accurate definition of a biological clone aligns with option B.