Definition

Noun: - The state or condition of having a single set of unpaired chromosomes in each cell. This is the characteristic chromosome number of gametes (e.g., sperm and egg cells) and some organisms.

Usage

• General Use: The term is used in biology and genetics to describe the chromosomal state of a cell or organism.
• Context: It is typically used in scientific writing, textbooks, and discussions about cell biology, reproduction, and genetics.

Examples

• Noun:
  • During meiosis, diploid cells undergo division to produce cells with haploidy.
  • The haploidy of the spore is essential for the alternation of generations in plants.
  • In humans, the egg and sperm cells exhibit haploidy, each containing 23 chromosomes.

Advanced Usage

• Comparative Context: Often discussed in contrast to "diploidy" (the condition of having two sets of chromosomes).
  • The life cycle of many algae involves alternating phases of haploidy and diploidy.

Variants and Related Words

• Haploid (adj): Describing a cell or organism that has a single set of chromosomes.
  • A haploid nucleus contains half the genetic material of a diploid cell.
• Haplont (n): An organism whose life cycle is predominantly in the haploid state.

Synonyms

• Monoploidy: In some contexts, this can be a synonym, though "haploidy" is the more common and specific term in animal and human genetics.

Antonyms

• Diploidy: The condition of having two complete sets of chromosomes, one from each parent.

Noun

1. the condition of being haploid