Q.

Polyploidy arises due to change in the

A. number of chromatids
B. structure of genes
C. number of chromosomes
D. structure of chromosomes
Answer» C. number of chromosomes
Explanation: An organism having more than two sets of homologous chromosomes is known as polyploid and the phenomenon polyploidy. Polyploidy refers to a numerical change in a whole set of chromosomes. Polyploidy may occur due to abnormal cell division, either during mitosis, or commonly during metaphase I in meiosis.
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