Final answer:
Organisms may reproduce by both mitosis and mitosis, with mitosis allowing for asexual reproduction and growth or repair, while meiosis enables sexual reproduction and genetic diversity in offspring.
Step-by-step explanation:
When conditions are poor, organisms often reproduce to ensure survival. Reproduction can occur through either mitosis or mitosis . Mitosis is a process where an organism's cells divide to either grow or repair tissue, producing genetically identical daughter cells. This type of reproduction is known as asexual reproduction , and it's quite common when conditions are not ideal as it does not require a mate and is a faster and more efficient way to increase numbers. In contrast, meiosis is a form of sexual reproduction producing genetically diverse haploid cells, which, when combined with another haploid cell from the opposite sex, can lead to increased genetic variation in offspring. This genetic variation is crucial for the survival of a species over time, making them more likely to adapt to changing environments.
Sexual reproduction is the fusion of haploid cells created through meiosis. This variation is key to evolutionary success, as it introduces new genetic combinations. Both asexual and sexual reproduction have their advantages depending on environmental conditions and the life strategies of the organism.
Therefore, organisms may reproduce by both mitosis and mitosis , often employing different methods depending on the conditions they face. Mitosis for maintenance and rapid expansion, and meiosis for creating diverse offspring capable of flourishing in variable conditions.