|
Title: Speciation by Changes in Ploidy Post by: tama401 on Feb 3, 2011 What would be the ploidy of the viable gametes produced by a tetraploid individual if nondisjunction of all chromosomes occurred in meiosis I?
Diploid Triploid Tetraploid Haploid How can an allopolyploid plant become a biologically fit new species? Synapsis of homologous chromosomes Nondisjunction event during meiosis Allopolyploid plants cannot become biologically fit new species; they are always sterile. Nondisjunction event during mitosis How many chromosomes would be found in an allopolyploid plant if its parents had diploid numbers of 2 and 10, respectively? Diploid number of 6 Haploid number of 6 Haploid number of 12 Diploid number of 12 Title: Re: Speciation by Changes in Ploidy Post by: bio_man on Feb 3, 2011 1st question, I'm guessing Tetraploid because nondisjunction is an error in meiosis or mitosis in which members of a pair of homologous chromosomes or a pair of sister chromatids fail to separate properly from each other.
2nd question, I'm guessing... Nondisjunction event during meiosis and for the 3rd question: I'm guessing Diploid number of 12 What textbook are you using, I can always double check! |