The advantages and disadvantages of being Polyploid

Speaker: Dr Ananda K.
Abstract: Polyploidy is the heritable condition of possessing more than two complete sets of chromosomes. Polyploids are common among plants, as well as among certain groups of fish, amphibians and recently reported in fungi also. Polyploids arise when a rare mitotic or meiotic catastrophe, such as nondisjunction, causes the formation of gametes that have a complete set of duplicate chromosomes. Diploid gametes are frequently formed in this way. A diploid gamete may fuse with a haploid gamete or with a diploid gamete to form polyploids of different types. Many types of polyploids are found in nature, including tetraploids (four sets of chromosomes), hexaploids (six sets of chromosomes), and other chromosome-pair multiples. In this talk we will discuss the mechanisms underlying polyploidy, and both the advantages and disadvantages of having multiple sets of chromosomes.
Thursday, September 29, 2016