One advantage of it results from heterosis, but it may induce a p53-mediated cell cycle checkpoint in animal cells.
The existence of it in the South American red vizcacha rat has recently been disproved. This term was introduced by Winkler, who worked on calluses developing on cut plant stems. One advantage of it results from heterosis, but it may induce a p53-mediated cell cycle checkpoint in animal cells. The salivary glands of Drosophila, mammalian liver cells, and plant endosperm all exhibit this phenomenon that can result from endoreplication, nonreduction in meiosis, or somatic doubling. Most commonly exhibited by angiosperms, FTP identify this condition in which cells possess more than two sets of chromosomes.
The existence of it in the South American red vizcacha rat has recently been disproved.
{polyploidy}