Definition

Noun: - The condition of being amphidiploid: This is a specific genetic state in which an organism possesses two complete diploid sets of chromosomes, each set derived from a different parent species. It is a type of polyploidy resulting from the combination of two distinct genomes.

Usage

• This term is used exclusively in the specialized fields of genetics, cytology, and plant breeding.
• It describes the chromosomal constitution of a hybrid organism, most commonly in plants.

Examples

• Noun:
  • The fertility of the hybrid was restored through amphidiploidy, creating a new stable species.
  • Scientists studied the amphidiploidy in the wheat hybrid to understand its robust growth.
  • The phenomenon of amphidiploidy is crucial for creating allopolyploid crops.

Advanced Usage

• "Induced amphidiploidy": Refers to the artificial creation of this condition, often using chemicals like colchicine to double the chromosome number in a sterile hybrid.
  • Induced amphidiploidy was used to develop a fertile form of the intergeneric hybrid.

Variants and Related Words

• Amphidiploid (noun): An organism that exhibits amphidiploidy.
  • The cultivated tobacco plant, Nicotiana tabacum, is a classic amphidiploid.
• Amphidiploid (adjective): Describing the condition or an organism with this condition.
  • The amphidiploid nature of the hybrid was confirmed by karyotype analysis.

Synonyms

• Allotetraploidy: A nearly synonymous term in many contexts, specifically referring to an amphidiploid with four sets of chromosomes (tetraploid) from two different species. "Amphidiploidy" is a broader term that can include other ploidy levels, but it is often used interchangeably with allotetraploidy.

Related Concepts (Not Phrasal Verbs or Idioms)

Given the highly technical nature of this word, it is not associated with phrasal verbs or idioms. Key related scientific concepts include: - Polyploidy: The general condition of having more than two complete sets of chromosomes. - Allopolyploidy: Polyploidy arising from the combination of chromosomes from two or more different species. Amphidiploidy is a common form of allopolyploidy. - Hybridization: The process of crossing different species or varieties, which can lead to amphidiploidy.

Noun

1. the condition of being amphidiploid