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Diploid Meaning: Definition, Examples, and Translations

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diploid

[ˈdɪplɔɪd ]

Definition

Context #1 | Noun

genetics biology

A diploid is any organism or cell that possesses two sets of chromosomes. This condition is essential for the normal function of many multicellular organisms. In diploids, genes are often expressed in pairs, allowing for dominance and recessiveness in traits. Most eukaryotic organisms, including animals and plants, exhibit diploidy in their somatic cells, contrasting with haploid cells that contain only one set of chromosomes. Diploidy contributes to the genetic variability and adaptability of species.

Synonyms

diploidy, diplotene.

Examples of usage

  • The diploids in our study showed increased vitality.
  • Many animals are klasified as diploids.
  • Yeast can exist in both diploid and haploid forms.

Translations

To see the translation, please select a language from the options available.

Interesting Facts

Biology

  • Most animals and plants are diploid, meaning they have pairs of chromosomes, one from each parent.
  • In humans, diploid cells contain 46 chromosomes, arranged in 23 pairs.
  • Diploid organisms reproduce through a special type of cell division called mitosis to grow and replace cells.

Genetics

  • In sexual reproduction, gametes (sperm and eggs) are haploid, meaning they have one set of chromosomes. When they combine, they form a diploid zygote.
  • Genetic diversity in diploid organisms arises from the combination of genetic material from two different parents.

Evolution

  • The diploid state is believed to provide a greater resilience against genetic mutations compared to haploid organisms, as they have two copies for repair.
  • Many plants can switch between diploid and haploid forms, which allows them to adapt better to environmental changes.

Pop Culture

  • The concept of diploidy can be found in various science-fiction themes, where genetic materials are often manipulated, emphasizing the role of DNA in evolution.
  • Films and books about cloning often explore themes related to genetics and diploidy, raising questions about identity and inheritance.

Origin of 'diploid'

Main points about word origin

  • The word 'diploid' comes from the Greek word 'diploos,' meaning 'double.'
  • It was first used in scientific contexts in the late 19th century to describe organisms with double sets of chromosomes.

The word 'diploid' originated from the Greek word 'diplous,' meaning 'double,' combined with the suffix '-oid,' meaning 'like' or 'resembling.' It was first used in the context of genetics to describe cells or organisms with two complete sets of chromosomes. The term gained prominence in the 20th century as scientific understanding of cell division and genetic inheritance advanced. Diploidy was recognized as a critical factor in the reproductive processes of eukaryotic organisms, distinguishing it from haploidy, where only one set of chromosomes is present. The distinction laid the groundwork for necessary studies into genetic variation, evolutionary biology, and inheritance patterns.

Word Frequency Rank

With rank #18,240, this word belongs to specialized vocabulary. While not common in everyday speech, it enriches your ability to express complex ideas.