Disomic means that only two chromosomes pair, the same as normal.
2.
Nullisomy is caused by non-disjunction during meiosis that causes two of the gametes to have no chromosomal material, leaving the other two gametes to have double the amount of chromosomal material ( disomic ).
3.
When it is allopolyploid it will be AA, BB, CC and DD . Thus four disomic chromosomes are characterictic of a allopolyploid . ( the diploid in each case has two disomic chromosome pairs ).
4.
When it is allopolyploid it will be AA, BB, CC and DD . Thus four disomic chromosomes are characterictic of a allopolyploid . ( the diploid in each case has two disomic chromosome pairs ).
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