31. It is a triploid , and hence needs good pollination, and can be difficult to grow. 32. This results in increased ploidy levels that range from triploid to pentaploid in wild-caught individuals. 33. They have not found much, not until the recent appearance on their radar screens of triploid salmon. 34. The immune systems of triploids appear to be weaker than those of diploid fish, wild or otherwise. 35. All modern plantain cultivars have three sets of chromosomes ( i . e . they are triploid ). 36. Therefore, maternal contribution to the genetic constitution of the triploid endosperm is double that of the embryo. 37. This is the reason why the Japanese think that a triploid specimen was imported from China to Japan. 38. The brahminy blindsnake is a triploid obligate parthenote and the only snake species known to be obligately parthenogenetic. 39. The resulting fish are " triploid " : they have three sets of chromosomes instead of two. 40. Triploid female salmon have highly atrophied ovaries and, unlike triploid males, don't attempt to mate.
