Definitions

1. noun

The number of complete sets of chromosomes in an organism’s cells; the condition of being diploid, tetraploid, etc.

“The increase in ploidy of plant cells led to the development of new crop varieties.”

2. noun

The total genetic content of an organism, expressed as the number of complete sets of chromosomes.

“The researchers analyzed the effect of ploidy on the expression of certain genes in the plant species.”