Question

A 2n= 3 cell can be

a) Monosomic

b) Autopolyploid

c) Allopolyploid

d) a or b

e) a or c

Answer 1

More than two set of chromosome is known as polyploidy. Formation of polyploid say 3n,4n is called triploid, tetraploid and so on.In the above eg we have diploid normal set of chromosome so it cannot be polyploids.So we are left with Aneuploid  in which the set of chromosome does not change ie 2n there is just the addition or deletion of chromosome ie 2n-1

So the right answer is a) monosomy