Ploidy: nf Ploidy is the number of copies, in a given cell or in the cells of an organism, of complete sets of the chromosomes of the genome of this type of organism. We denote by n the number of chromosomes of a single complete set:
A cell is haploid if it has 1 complete set, or n chromosomes.
- It is diploid if it has 2 sets, therefore 2 n chromosomes, organized in n pairs.
- It is polyploid if it has at least 3 sets: triploid (3 n chromosomes ...
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