Question

Which of the following statements is incorrect with respect to polyploidy?

(a) Often seen in plants

(b) Results in sterility in animals

(c) A decrease in the number of sets of chromosomes

(d) Increase in the number of sets of chromosomes

I got this question during a job interview.

I need to ask this question from Inheritance and Variation Principles in chapter Principles of Inheritance and Variation of Biology – Class 12

Answer 1

The correct choice is (c) A decrease in the number of sets of chromosomes

To elaborate: Decrease in the number of sets of chromosomes is not known as polyploidy. In polyploidy conditions, after the telophase stage of cell division, cytokinesis fails to occur which results in an increase in a whole set of chromosomes in an organism. Polyploidy is often seen in plants and it results in sterility in animals.