Final answer:
The term for creating new combinations of alleles during sexual reproduction, involving outbreeding, meiosis, and crossing over, is responsible for increasing genetic variation among offspring.
Step-by-step explanation:
The creation of new combinations of alleles during sexual reproduction, complete with outbreeding, meiosis, and crossing over, is known for increasing genetic variation among offspring. This process involves independent assortment and crossing-over during meiosis, as well as the random union of gametes during fertilization. Each of these mechanisms contributes to the reshuffling of the genetic deck, which is essential for the potential adaptation and survival of species in changing environments. Sexual reproduction ensures that each offspring is genetically unique, which can be an adaptive advantage in unpredictable conditions.