What defines asexual reproduction?

Asexual reproduction is defined by the process in which offspring are produced from a single parent organism. This method results in offspring that are genetically identical to the parent, barring any mutations. The defining characteristic of asexual reproduction is that it does not involve the fusion of gametes, which is typical in sexual reproduction.

In contrast, the other options highlight aspects of sexual reproduction or misconceptions about asexual reproduction. For instance, the first option incorrectly implies that two parent organisms are necessary, which is a hallmark of sexual reproduction. The second option discusses genetic variation typically created through sexual reproduction, where offspring can vary due to the combination of genetic material from two parents. Lastly, the last option mistakenly restricts asexual reproduction to multicellular organisms; in reality, it can also occur in unicellular organisms, such as bacteria, through processes like binary fission. Thus, identifying that asexual reproduction produces offspring that are genetically identical to the parent is fundamental to understanding its nature.