Final answer:
After cell fusion, the resulting hybrid cell may exhibit unique characteristics combining traits from both parent cells. If one of the parent cells is immortal, the hybrid may grow indefinitely. Over time, these cells might develop chromosomal abnormalities and become immortal cell lines used in research.
Step-by-step explanation:
Long after cell fusion, the resulting cell would appear as a hybrid exhibiting characteristics of both parent cells. In the process of cell fusion, cells from two different sources can combine to form heterokaryons, which contain two nuclei from the original cells. Over time, these nuclei may fuse to create a new hybrid nucleus with a mixed genetic identity. If one of the parent cells is immortal, like many cell lines used in research, then the new cell may also be capable of growing indefinitely in culture.
Cells use various mechanisms during reproduction to ensure that two genetically identical daughter cells arise from one parent cell. Key structures like the septum and cleavage furrow in animal cells, or the cell plate in plant cells, play important roles in physically dividing the cell contents. Subsequently, the proteins, such as FtsZ, are redistributed into the cytoplasm of each new cell.
The hybrid cell might undergo chromosomal abnormalities, rearrangements, or deletions depending on the stability of the new genetic configuration and the conditions of the culture environment. In some cases, these cells can become immortal cell lines used for various research purposes, capable of growing indefinitely as long as they are properly maintained.