Question

Choose the incorrect statement with respect to chromosomal abnormality.

• A. Aneuploidy refers to loss or gain of chromosome(s)
• B. Triploidy is characterised by the presence of three sets of chromosomes
• C. Polyploidy refers to having multiple sets of chromosomes in a cell
• D. Triploidy is the presence of three copies of one particular chromosome in all the cells

Answer 1

The correct option is D Triploidy is the presence of three copies of one particular chromosome in all the cells

Aneuploidy is the condition arising from chromosomal nondisjunctions due to which there are either extra copies or loss of certain chromosomes.

Trisomy is a type of aneuploidy in which there are three copies of one particular chromosome in all cells.

Polyploidy arises due to failure of cytokinesis which leads to the presence of more than two sets of chromosomes in a cell.

Triploidy is a type of polyploidy in which an organism has three sets of chromosomes in all the cells.