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Haploid

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Haploid describes a cell that contains a single set of chromosomes. In humans, haploid cells are typically gametes, such as sperm and eggs, which contain 23 chromosomes each.

5 Must Know Facts For Your Next Test

  1. Haploid cells are produced through the process of meiosis.
  2. In diploid organisms, haploid cells combine during fertilization to form a diploid zygote.
  3. The haploid number is denoted as 'n', while the diploid number is '2n'.
  4. In humans, the haploid number is 23 chromosomes.
  5. Haploidy ensures genetic diversity through sexual reproduction.

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