The two processes that produce variations in living things are 1. sexual and asexual reproduction 2. asexual reproduction and changes in the environment 3. mutation and changes in the environment 4. sexual reproduction and mutation

The lineage of pea plants produced round seeds for four generations. the plants that fertilized these pea plants also produced round seeds. however, in the fifth generation, the plant produced to two plants with wrinkled seeds. can that be possible?